caubert / CSCI_3410 (public) (License: CC BY 4.0) (since 2018-05-16) (hash sha1)
Material for Database Class.
Clone URLs: https://rocketgit.com/user/caubert/CSCI_3410 ssh://rocketgit@ssh.rocketgit.com/user/caubert/CSCI_3410 git://git.rocketgit.com/user/caubert/CSCI_3410
master
List of commits:
Subject Hash Author Date (UTC)
Factorizing some aspect, separating fugires, re-wrote makefil, added treatment for html and odt outputs. 91d14fa349fe376408bcc48e4ada948777bda5a0 au 2018-12-17 02:57:14
Fixing project archeticture, tayloring README and moving typesetting section from lecture notes to README. c00c920db70a59ee8626134287aa47455fcb3e03 au 2018-12-16 19:51:52
Fine-tuning makefile 2ce6e9dea5235a97c02b97e548567ff4584c3153 au 2018-12-16 05:41:35
Fixing da441e5483d8153bff9b25f50230f584c4d67c5e au 2018-12-16 05:38:00
re-adding templates. bfe4f6aa774c7befef9eda07f31edb5c9907cedb au 2018-12-16 05:30:19
Restore er tex files. 771634fed59ac3a00fa3fa8ee292e98c4e35e3d6 au 2018-12-16 05:26:43
Changing vect. format from SVG to PDF. fa1276c21b6d139d52bd2c0405a9eb694e1a932d au 2018-12-16 05:25:50
Fixing minor typos 3fd56098f9022b48fadff8e3ea10fd7fcd49213a au 2018-12-16 04:05:47
Re-organization of the project. ccb3e4e35a17076f72b836720948ba7cfe86155b au 2018-12-16 03:16:19
Ending reporting notes on paper, added planned schedule, added meta-info and made tthe pdf TOC deeper. 96ffdff901b7e059471c34d7f7df6771ded38783 aubert@math.cnrs.fr 2018-05-30 15:46:13
Starting to work on ER def, adding some diagrams. 4a938b9a338846c988800a1cc4d0c5f9fcd31f8d aubert@math.cnrs.fr 2018-05-29 21:16:02
Finished SQL, started Design. 00c36f130c3f88bd548d009eb80e910db64ec823 aubert@math.cnrs.fr 2018-05-25 20:46:33
Adding the temp file, trying to patch the numbering of exercises inside problems. e4e4624cd1037e65a45e8690f2b92e183714b486 aubert@math.cnrs.fr 2018-05-24 19:22:13
Cleaned up the code, fixed some typos, added a list of problems, started working onthe problem for SQL. 701556c081df0bbf8e8800106c7aa4c997e560de aubert@math.cnrs.fr 2018-05-24 07:21:26
Finishing exo for chapter SQL aea58f58f06d99615ae7cb85247bdc08c5ce9d96 aubert@math.cnrs.fr 2018-05-23 17:52:51
Progress on the SQL chapter. e13cddc35a709c6714a90b21d8ed8db6b037793c aubert@math.cnrs.fr 2018-05-23 05:12:21
Started type some relational model examples in latex, reviewed chapter 1 and 2. 1ddf3000e0cb4f8f02b2b2de1ffd8ae14a81c9dc aubert@math.cnrs.fr 2018-05-22 21:09:12
Finished correcting Chapter 1. Added a preamble and tweaked a lot (math, references, titles of subsubsections, etc.) acdd1bb083cd6985763afd9b77e1b7995dc1ebd7 aubert@math.cnrs.fr 2018-05-22 07:02:51
Cleaning latex dependencies: removed colors, fonts, etc., added header and footer. b4c1232d6091e12bc2cdf038529921143a55b758 aubert@math.cnrs.fr 2018-05-22 05:06:04
Putting all latex material aside, changing class. e43fb54e6ecb0ec4669ed16feba940b47ee3e35c aubert@math.cnrs.fr 2018-05-21 15:14:48
Commit 91d14fa349fe376408bcc48e4ada948777bda5a0 - Factorizing some aspect, separating fugires, re-wrote makefil, added treatment for html and odt outputs.
Author: au
Author date (UTC): 2018-12-17 02:57
Committer name: au
Committer date (UTC): 2018-12-17 02:57
Parent(s): c00c920db70a59ee8626134287aa47455fcb3e03
Signer:
Signing key:
Signing status: N
Tree: 72bb9e1d103c4c50d1c4f090f98755eadb507546
File Lines added Lines deleted
README.md 8 7
notes/Makefile 54 13
notes/latex/packages.sty 1 1
notes/lectures_notes.md 49 180
notes/vec/er/Accident.tex 25 0
notes/vec/er/Bad_Design.tex 1 3
notes/vec/er/Belongs.tex 10 0
notes/vec/er/Car_Info.tex 31 0
notes/vec/er/Cellphone.tex 13 0
notes/vec/er/Computer.tex 13 0
notes/vec/er/Constraint2.tex 1 3
notes/vec/er/Contains.tex 10 0
notes/vec/er/Country.tex 40 0
notes/vec/er/Entity_Instructor.tex 1 3
notes/vec/er/Naming.tex 1 3
notes/vec/er/Person.tex 12 0
notes/vec/er/Pilot.tex 17 0
notes/vec/er/Rel_Instance.tex 1 3
notes/vec/er/Role_Name1.tex 1 3
notes/vec/er/Role_Name2.tex 1 3
notes/vec/er/Role_Name3.tex 1 3
notes/vec/er/Stays_At.tex 14 0
notes/vec/uml/Flight.tex 23 0
notes/vec/uml/template.def 4 0
File README.md changed (mode: 100644) (index b39d363..303a1ee)
... ... Here are the lecture notes, code, exercises and problems for a lecture on databa
6 6
7 7 ## Getting Started ## Getting Started
8 8
9 The source code is organized as follows:
9 The source code, hosted at <https://rocketgit.com/user/caubert/CSCI_3410>, is organized as follows:
10 10
11 11 ~~~{.plain} ~~~{.plain}
12 12 . .
 
... ... The source code is organized as follows:
21 21 └── README.md -- The present file └── README.md -- The present file
22 22 ~~~ ~~~
23 23
24 Before compiling this document, you will need
24 Before compiling this document, you will need to install
25 25
26 - To install git (cf. <https://git-scm.com/>)
27 - To install pandoc (cf. <http://pandoc.org/installing.html>)
28 - To install LaTeX (cf. <https://www.latex-project.org/get/>, <https://tex.stackexchange.com/q/1092>)
29 - To install pandoc-numbering (cf. <https://github.com/chdemko/pandoc-numbering#installation>)
30 - To install latexmk (cf. <https://ctan.org/pkg/latexmk/>, but it is possible that it is already part of your LaTeX installation.)
26 - git (cf. <https://git-scm.com/>)
27 - pandoc (cf. <http://pandoc.org/installing.html>)
28 - LaTeX (cf. <https://www.latex-project.org/get/>, <https://tex.stackexchange.com/q/1092>)
29 - pandoc-numbering (cf. <https://github.com/chdemko/pandoc-numbering#installation>)
30 - latexmk (cf. <https://ctan.org/pkg/latexmk/>, but it is possible that it is already part of your LaTeX installation.)
31 - pdf2svg (cf. <https://github.com/dawbarton/pdf2svg>)
31 32 - To clone the source, - To clone the source,
32 33
33 34 ~~~{.bash} ~~~{.bash}
File notes/Makefile changed (mode: 100644) (index 45c77f5..5f579be)
1 1 # http://www.gnu.org/software/make/manual/make.html # http://www.gnu.org/software/make/manual/make.html
2 # http://nuclear.mutantstargoat.com/articles/make/
3
2 4
3 5 # Makefile global options. # Makefile global options.
4 6
5 .DEFAULT_GOAL := pdf
6 7 MAKEFLAGS := -j MAKEFLAGS := -j
7 ## Maximize parallel execution whenever possible
8 # Maximize parallel execution whenever possible
9 OPTIONSPANDOC := --pdf-engine=xelatex --pdf-engine-opt=-shell-escape --toc --filter pandoc-numbering --filter pandoc-citeproc --top-level-division=chapter -V links-as-notes -M date="$$(LANG=en_us_88591 date '+%B %e, %Y (%r)')"
10 # Options common to all invokations of pandoc
11 .DEFAULT_GOAL := pdf
8 12
9 # "Phony" rule to compile the SVG figures using latexmk
10 13
11 VEC = vec/rel_mod/*.tex vec/er/*.tex
14 # "Phony" rule to compile the pdf figures using latexmk
15
16 VEC = vec/rel_mod/*.tex vec/er/*.tex vec/uml/*.tex
12 17 .PHONY: vec $(VEC) .PHONY: vec $(VEC)
13 18 vec: $(VEC) vec: $(VEC)
14 19 $(VEC): $(VEC):
15 latexmk -silent -cd -pdf -c $@
20 latexmk -silent -cd -pdf $@
21
22
23 # "Phony" rule to convert the pdf figures to svg (for better integration in htm and odt output).
24
25 VEC_SVG = vec/rel_mod/*.pdf vec/er/*.pdf vec/uml/*.pdf
26 .PHONY: vec_svg $(VEC_SVG)
27 # $(VEC) is an "order-only" pre-requisite. Cf. http://www.gnu.org/software/make/manual/make.html#Types-of-Prerequisites
28 vec_svg: $(VEC_SVG)
29 $(VEC_SVG): |$(VEC)
30 pdf2svg $@ $(addsuffix .svg,$(basename $@))
31 # To understand the syntax, cf. https://www.gnu.org/software/make/manual/html_node/File-Name-Functions.html#File-Name-Functions
32
33
34 # Rule to compile to pdf
35
36 pdf: lectures_notes.md | $(VEC)
37 pandoc $(OPTIONSPANDOC) --default-image-extension=pdf -o lectures_notes.pdf $<
16 38
17 # Rule to compile the pdf
39
40 # Rule to compile to odt
41
42 odt: lectures_notes.md | $(VEC_SVG)
43 pandoc $(OPTIONSPANDOC) --default-image-extension=svg -o lectures_notes.odt $<
44
45
46 # Rule to compile to html
47
48 html: lectures_notes.md | $(VEC_SVG)
49 pandoc $(OPTIONSPANDOC) --default-image-extension=svg --self-contained -o lectures_notes.html $<
18 50
19 pdf: lectures_notes.md | $(VEC) # $(VEC) is an "order-only" pre-requisite. Cf. http://www.gnu.org/software/make/manual/make.html#Types-of-Prerequisites
20 pandoc --pdf-engine=xelatex --pdf-engine-opt=-shell-escape --toc --filter pandoc-numbering --filter pandoc-citeproc --top-level-division=chapter -V links-as-notes -M date="$$(LANG=en_us_88591 date '+%B %e, %Y (%r)')" -o lectures_notes.pdf $<
21 51
22 #
23 temp:
24 pandoc temp.md --pdf-engine=xelatex --pdf-engine-opt=-shell-escape --toc --filter pandoc-numbering --filter pandoc-citeproc --top-level-division=chapter -V links-as-notes -M date="$$(LANG=en_us_88591 date '+%B %e, %Y (%r)')" -o temp.pdf
52 # Rule to compile a temporary file, for testing purposes
25 53
54 temp: | $(VEC)
55 pandoc temp.md $(OPTIONSPANDOC) --default-image-extension=pdf -o temp.pdf
56
57
58 # "Phony" rule to compile all three versions (html, odt, pdf) of the document
59
60 .PHONY : all
61 all : pdf odt html push
26 62
27 # Rule to compile the README to html, and to publish the compiled lecture notes and the README to the website.
28 push: | pdf
63
64 # "Phony" rule to compile the README to html, and to publish the compiled lecture notes and the README to the website.
65
66 .PHONY : push
67 push:
29 68 pandoc ../README.md -s -o ../README.html pandoc ../README.md -s -o ../README.html
30 69 cp lectures_notes.pdf ../../../website/CSCI_3410_2019_F_lecture_notes.pdf cp lectures_notes.pdf ../../../website/CSCI_3410_2019_F_lecture_notes.pdf
70 cp lectures_notes.html ../../../website/CSCI_3410_2019_F_lecture_notes.html
71 cp lectures_notes.odt ../../../website/CSCI_3410_2019_F_lecture_notes.odt
31 72 cp ../README.html ../../../website/CSCI_3410_2019_F_README.html cp ../README.html ../../../website/CSCI_3410_2019_F_README.html
File notes/latex/packages.sty changed (mode: 100644) (index c7be85d..3cbb414)
... ... every isa]
131 131
132 132
133 133 %%%% UML Class Diagrams %%%% UML Class Diagrams
134 \usepackage[simplified]{pgf-umlcd}
134
135 135 \usetikzlibrary{arrows} \usetikzlibrary{arrows}
File notes/lectures_notes.md changed (mode: 100644) (index 00d841f..54a2d5f)
... ... subtitle: Lecture Notes (Draft)
5 5 author: Clément Aubert author: Clément Aubert
6 6 institute: Augusta University institute: Augusta University
7 7 papersize: letter papersize: letter
8 margin: 1em
8 margins: 1em
9 9 bibliography: [ bib/bib.bib ] bibliography: [ bib/bib.bib ]
10 10 link-citations: true link-citations: true
11 11 lang: en lang: en
 
... ... The focus will be on design, but we will have to do a little bit of everything.
190 190
191 191 ![The cycle of design](img/cycle_of_design.jpeg){#fig:cycle} ![The cycle of design](img/cycle_of_design.jpeg){#fig:cycle}
192 192
193 Refer to the ["The cycle of design" figure]{#fig:cycle}.
193 Refer to the ["The cycle of design" figure](#fig:cycle).
194 194
195 195 Add a line from SQL to Program, a line from NoSQL to CLI. Add a line from SQL to Program, a line from NoSQL to CLI.
196 196 Make the arrow from Bus. Statements to NoSQL dashed? Make the arrow from Bus. Statements to NoSQL dashed?
 
... ... CAR(VIN (PK), Make, Model, Year)
522 522 DRIVER(State (PK), Licence\_number (PK), Name, Address) DRIVER(State (PK), Licence\_number (PK), Name, Address)
523 523 INSURANCE(Policy\_Number (PK), Insured\_Car (FK to CAR.VIN), Insured\_Driver\_State (FK to DRIVER.State), Insured\_Driver\_Num (FK to DRIVER.Licence\_number), Rate) INSURANCE(Policy\_Number (PK), Insured\_Car (FK to CAR.VIN), Insured\_Driver\_State (FK to DRIVER.State), Insured\_Driver\_Num (FK to DRIVER.Licence\_number), Rate)
524 524 PRICE(Stock\_number (PK), Car\_Vin (FK to CAR.VIN), Price, Margin) PRICE(Stock\_number (PK), Car\_Vin (FK to CAR.VIN), Price, Margin)
525 ](vec/rel_mod/CAR.pdf){ width=100% }
525 ](vec/rel_mod/CAR){ width=100% }
526 526 \ \
527 527
528 528 (Yes, we do need the state *and* the licence number to uniquely identify a driver's licence, since [many states use the same licence format](https://ntsi.com/drivers-license-format/). (Yes, we do need the state *and* the licence number to uniquely identify a driver's licence, since [many states use the same licence format](https://ntsi.com/drivers-license-format/).
 
... ... Exercise +.#
635 635 AUTHOR(Ref, Name, Address) AUTHOR(Ref, Name, Address)
636 636 BOOK(ISSN, AuthorRef, Title) BOOK(ISSN, AuthorRef, Title)
637 637 GAINED-AWARD(Ref, Name, BookISSN, Year) GAINED-AWARD(Ref, Name, BookISSN, Year)
638 ](vec/rel_mod/BOOK_Exo.pdf){ width=100% }
638 ](vec/rel_mod/BOOK_Exo){ width=100% }
639 639 \ \
640 640
641 641 For each relation, answer the following: For each relation, answer the following:
 
... ... Exercise +.#
651 651 TRAIN(Ref (PK), Model, Year) TRAIN(Ref (PK), Model, Year)
652 652 CONDUCTOR(CompanyID (PK), Name, ExperienceLevel) CONDUCTOR(CompanyID (PK), Name, ExperienceLevel)
653 653 ASSIGNED-TO(TrainRef (PK, FK to TRAIN.Ref), ConductorID (PK, FK to CONDUCTOR.CompanyID), Date (PK)) ASSIGNED-TO(TrainRef (PK, FK to TRAIN.Ref), ConductorID (PK, FK to CONDUCTOR.CompanyID), Date (PK))
654 ](vec/rel_mod/TRAIN_Exo.pdf){ width=100% }
654 ](vec/rel_mod/TRAIN_Exo){ width=100% }
655 655 \ \
656 656
657 657 #. What are the foreign keys in the ASSIGNED-TO relation? What are they refering? #. What are the foreign keys in the ASSIGNED-TO relation? What are they refering?
 
... ... Solution +.#
704 704 AUTHOR(Ref (PK), Name, Address) AUTHOR(Ref (PK), Name, Address)
705 705 BOOK(ISSN (PK), AuthorRef (FK to AUTHOR.REF), Title) BOOK(ISSN (PK), AuthorRef (FK to AUTHOR.REF), Title)
706 706 GAINED-AWARD(Ref (PK), Name, BookISSN (FK to BOOK.ISSN), Year) GAINED-AWARD(Ref (PK), Name, BookISSN (FK to BOOK.ISSN), Year)
707 ](vec/rel_mod/BOOK_Exo.pdf){ width=100% }
707 ](vec/rel_mod/BOOK_Exo){ width=100% }
708 708 \ \
709 709
710 710 For the last question, the answer is yes: based on the ISSN of the book, we can retrieve the author of the book. Hence, knowing which book was awarded which year, by lookinq in the GAINED-AWARD table, gives us the answer to that question. For the last question, the answer is yes: based on the ISSN of the book, we can retrieve the author of the book. Hence, knowing which book was awarded which year, by lookinq in the GAINED-AWARD table, gives us the answer to that question.
 
... ... THEATER(Id (PK), Name, Address)
767 767 AUDITORIUM(Id (PK), Capacity, Theater (FK to THEATER.Id)) AUDITORIUM(Id (PK), Capacity, Theater (FK to THEATER.Id))
768 768 SHOWTIME(Id (PK), MovieId (FK to MOVIE.Id), AuditoriumId (FK to AUDITORIUM.Id), StartTime) SHOWTIME(Id (PK), MovieId (FK to MOVIE.Id), AuditoriumId (FK to AUDITORIUM.Id), StartTime)
769 769 TICKETS(Id (PK), ShowTimeId (FK to SHOWTIME.Id), Price) TICKETS(Id (PK), ShowTimeId (FK to SHOWTIME.Id), Price)
770 ](vec/rel_mod/CINEMA.pdf){ width=100% }
770 ](vec/rel_mod/CINEMA){ width=100% }
771 771 \ \
772 772
773 773 # The SQL Programming Language # The SQL Programming Language
 
... ... MariaDB [HW_CONSTRAINTS_PART3]> SELECT * FROM Table_set_null;
1220 1220 ![ ![
1221 1221 PROF(Login (PK), Name, Department (FK to DEPARTMENT.Code)) PROF(Login (PK), Name, Department (FK to DEPARTMENT.Code))
1222 1222 DEPARTMENT(Code (PK), Name, Head (FK to PROF.Login)) DEPARTMENT(Code (PK), Name, Head (FK to PROF.Login))
1223 ](vec/rel_mod/PROF_DEPARTMENT.pdf){ width=100% }
1223 ](vec/rel_mod/PROF_DEPARTMENT){ width=100% }
1224 1224 \ \
1225 1225
1226 1226 ~~~{.sqlmysql .numberLines} ~~~{.sqlmysql .numberLines}
 
... ... Can you provide a *relational model* (no need to write the `SQL` code, but remem
2797 2797 ## Solution to Selected Problems ## Solution to Selected Problems
2798 2798
2799 2799 Solution to [%D %n (%T)](#problem:address) Solution to [%D %n (%T)](#problem:address)
2800 ~ This problem is supposed to be a straightforward application of what we studied in class. Look back at [Setting Up Your Work Environment]{#sec:setup} if you feel like you are stuck before rushing to this solution.
2800 ~ This problem is supposed to be a straightforward application of what we studied in class. Look back at [Setting Up Your Work Environment](#sec:setup) if you feel like you are stuck before rushing to this solution.
2801 2801
2802 2802 @problem:address -- Solution to Q. -.# @problem:address -- Solution to Q. -.#
2803 2803 ~ We simply log-in as indicated in the ["Loging-in as testuser"](#testuserlogin) Section. ~ We simply log-in as indicated in the ["Loging-in as testuser"](#testuserlogin) Section.
 
... ... We then create the tables as in the problem.
2868 2868 ![ ![
2869 2869 NAME(FName, LName, Id(PK)) NAME(FName, LName, Id(PK))
2870 2870 ADDRESS(StreetName (PK), Number (PK), Habitants (FK referencing NAME.Id)) ADDRESS(StreetName (PK), Number (PK), Habitants (FK referencing NAME.Id))
2871 ](vec/rel_mod/ADDRESS.pdf){ width=100% }
2871 ](vec/rel_mod/ADDRESS){ width=100% }
2872 2872 \ \
2873 2873
2874 2874 @problem:address -- Solution to Q. -.# @problem:address -- Solution to Q. -.#
 
... ... WEAPON(Name (PK), Bonus, Possessed-By (FK to CHARACTER.Name))
3290 3290 QUEST(Name (PK), XP) QUEST(Name (PK), XP)
3291 3291 COMPLETED-BY(Character (PK, FK to CHARACTER.Name), Quest (PK, FK to QUEST.Name)) COMPLETED-BY(Character (PK, FK to CHARACTER.Name), Quest (PK, FK to QUEST.Name))
3292 3292 SPECIAL-ITEM(Name (P), Quest (FK to QUEST.Name)) SPECIAL-ITEM(Name (P), Quest (FK to QUEST.Name))
3293 ](vec/rel_mod/RPG.pdf){ width=100% }
3293 ](vec/rel_mod/RPG){ width=100% }
3294 3294 \ \
3295 3295
3296 3296 # Designing a Good Database # Designing a Good Database
 
... ... multivalued | the box have double lines |
3404 3404 derived | the box have dotted lines | derived | the box have dotted lines |
3405 3405 a key | the name of the attribute is underlined | a key | the name of the attribute is underlined |
3406 3406
3407 ![](vec/er/Naming.pdf){ width=100% }
3407 ![](vec/er/Naming){ width=100% }
3408 3408 \ \
3409 3409
3410 ![](vec/er/Entity_Instructor.pdf){ width=100% }
3410 ![](vec/er/Entity_Instructor){ width=100% }
3411 3411 \ \
3412 3412
3413 3413 --- ---
 
... ... Reminder: entity = actual thing, entity set = collection of entities, entity typ
3425 3425
3426 3426 $E_1$, … $E_n$ *participate* in R, $e_1$, …, $e_n$ *participate* in $r_1$, $n$ is the degree. $E_1$, … $E_n$ *participate* in R, $e_1$, …, $e_n$ *participate* in $r_1$, $n$ is the degree.
3427 3427
3428 ![](vec/er/Rel_Instance.pdf){ width=100% }
3428 ![](vec/er/Rel_Instance){ width=100% }
3429 3429 \ \
3430 3430
3431 3431 Note that we can have Entity Set 1 = Entity Set 2, in which case we say the relation is recursive. Note that we can have Entity Set 1 = Entity Set 2, in which case we say the relation is recursive.
 
... ... Naming convention:
3438 3438 - Drawing usually reads right to left, and up to down. - Drawing usually reads right to left, and up to down.
3439 3439
3440 3440
3441 ![](vec/er/Bad_Design.pdf){ width=100% }
3441 ![](vec/er/Bad_Design){ width=100% }
3442 3442 \ \
3443 3443
3444 3444
 
... ... Convenient, and sometimes mandatory, to give role names.
3448 3448
3449 3449 If we want to stress that we are considering only one aspect of an entity (that is, a person is not only an employee, a company is not only an employer, but this aspect is crucial for the "EMPLOYS" relation): If we want to stress that we are considering only one aspect of an entity (that is, a person is not only an employee, a company is not only an employer, but this aspect is crucial for the "EMPLOYS" relation):
3450 3450
3451 ![](vec/er/Role_Name1.pdf){ width=100% }
3451 ![](vec/er/Role_Name1){ width=100% }
3452 3452
3453 3453 We can also use it to make the "right-side" and the "left-side" of a recursive relationship explicit: We can also use it to make the "right-side" and the "left-side" of a recursive relationship explicit:
3454 3454
3455 ![](vec/er/Role_Name2.pdf){ width=100% }
3456 ![](vec/er/Role_Name3.pdf){ width=100% }
3455 ![](vec/er/Role_Name2){ width=100% }
3456 ![](vec/er/Role_Name3){ width=100% }
3457 3457
3458 3458 Finally, we will sometimes use "Role Name of Entity 1 : Role Name of Entity 2" as a notation for the relation between them. Finally, we will sometimes use "Role Name of Entity 1 : Role Name of Entity 2" as a notation for the relation between them.
3459 3459 For instance, we can write "Employer:Employee" to denote the "EMPLOYS" relation, and we will also use this notation with entities, and write "PERSON:POSITION" for the "OCCUPIES" relation. For instance, we can write "Employer:Employee" to denote the "EMPLOYS" relation, and we will also use this notation with entities, and write "PERSON:POSITION" for the "OCCUPIES" relation.
 
... ... For binary relations, can be $1:1$, $N:1$, $M:N$ ($1$ is "at most", $M$, $N$, $O
3476 3476
3477 3477 We indicate the ratio on the edges: We indicate the ratio on the edges:
3478 3478
3479 ![](vec/er/Constraint1.pdf){ width=100% }
3479 ![](vec/er/Constraint1){ width=100% }
3480 3480
3481 3481 ##### Participation constraint ##### Participation constraint
3482 3482
 
... ... The participation can be total (a.k.a. existence dependency) or partial.
3486 3486
3487 3487 Total is drawn with a double line, partial is drawn with a single line. Total is drawn with a double line, partial is drawn with a single line.
3488 3488
3489 ![](vec/er/Constraint1.pdf){ width=100% }
3489 ![](vec/er/Constraint1){ width=100% }
3490 3490
3491 3491
3492 3492 #### Attributes #### Attributes
 
... ... What would be the ratio of such a relation?
4068 4068 Exercise +.# Exercise +.#
4069 4069 ~ Convert the following ER diagram into a relational model: ~ Convert the following ER diagram into a relational model:
4070 4070
4071 \begin{tikzpicture}[node distance=7em]
4072 \node[relationship] (contains){STAYS\_AT};
4073 \node[entity] (person) [above = 1cm of contains] {PERSON} edge node[right] {$N$} (contains);;
4074 \node[attribute] (ssn) [left of=person] {\key{SSN}} edge (person);
4075 \node[attribute] (dob) [above = .5cm of person] {Date\_Of\_Birth} edge (person);
4076 \node[entity] (burger) [below of= contains] {PLACE} edge node[right] {$1$} (contains);
4077 \node[attribute] (dob) [below = .5cm of burger] {\key{Address}} edge (burger);
4078 \node[attribute] (ssn) [left of=burger] {Rooms} edge (burger);
4079 \end{tikzpicture}
4071 ![](vec/er/Stays_At){ width=100% }
4072 \
4080 4073
4081 4074 Exercise +.# Exercise +.#
4082 4075 ~ Why do weak entity type have a total participation constraint? ~ Why do weak entity type have a total participation constraint?
 
... ... Exercise +.#
4197 4190 Exercise +.# Exercise +.#
4198 4191 ~ Consider the following diagram: ~ Consider the following diagram:
4199 4192
4200 \begin{tikzpicture}[scale = 0.8]
4201 \begin{class}[text width=7cm]{Flight}{0,0}
4202 \attribute{flightNumber : Integer}
4203 \attribute{departureTime : Date}
4204 \attribute{flightDuration : Minutes}
4205 \attribute{departingAirport : String}
4206 \attribute{arrivingAirport : String}
4207 \operation{delayFlight(numberOfMinutes : Minutes)}
4208 \operation{getArrivalTime( ) : Date}
4209 \end{class}
4210 \begin{class}{Plane}{11, -0.8}
4211 \attribute{airPlaneType : String}
4212 \attribute{maximumSpeed : MPH}
4213 \attribute{maximumDistance : Miles}
4214 \attribute{tailID : String}
4215 \end{class}
4216 \association{Plane}{}{0..1}{Flight}{0..*}{}
4217 \end{tikzpicture}
4193 ![](vec/uml/Flight){ width=100% }
4218 4194
4219 Give the number of attributes for both classes, and suggest two operations for the class that doesn't have any. Discuss the multiplicities: why did the designer picked those values?
4195 Give the number of attributes for both classes, and suggest two operations for the class that doesn't have any. Discuss the multiplicities: why did the designer picked those values?
4220 4196
4221 4197 Exercise +.# Exercise +.#
4222 4198 ~ Briefly explain the difference between an aggregation and a composition association. ~ Briefly explain the difference between an aggregation and a composition association.
 
... ... Why is such a concept useful?
4228 4204 Exercise +.# Exercise +.#
4229 4205 ~ Convert the following E.R. diagram into a U.M.L. class diagram: ~ Convert the following E.R. diagram into a U.M.L. class diagram:
4230 4206
4231 \begin{tikzpicture}[node distance=8em]
4232 \node[entity] (person) {PILOT};
4233 \node[attribute] (pid) [left of=person] {\key{ID}} edge (person);
4234 \node[attribute] (name) [above left of=person] {Name} edge (person);
4235 \node[attribute] (phone) [above of=person] {Experience} edge (person);
4236
4237 \node[relationship] (drives) [below of=person] {ASSIGNED\_TO} edge node[right, pos=0.1] {$N$} (person);
4238 \node[entity] (plane) [below of=drives] {PLANE} edge [total] node[right, pos=0.7] {$1$} (drives);
4239 \node[attribute] (make) [left of=plane] {\key{TailID}} edge (plane);
4240 \node[attribute] (maxS) [below left of =plane] {MaxSpeed} edge (plane);
4241 \node[attribute] (airPlaneType) [below of = plane] {AirPlaneType} edge (plane);
4242 \end{tikzpicture}
4207 ![](vec/er/Pilot){ width=100% }
4208 \
4243 4209
4244 4210 ## Solution to Exercises {-} ## Solution to Exercises {-}
4245 4211
 
... ... Solution +.#
4248 4214 To have statistics about the extensions, to sort the username by length, etc. To have statistics about the extensions, to sort the username by length, etc.
4249 4215
4250 4216 Solution +.# Solution +.#
4251 ~ \begin{tikzpicture}[node distance=7em]
4252 \node[entity] (computer) {COMPUTER};
4253 \node[attribute] (pid) [left of=computer] {\key{Id}} edge (computer);
4254 \node[multi attribute] (os) [above of=computer] {Operating\_System} edge (computer);
4255 \node[attribute] (devices) [right of=computer] {Devices} edge (computer);
4256 \node[attribute] (mouse) [above right of=devices] {Mouse} edge (devices);
4257 \node[attribute] (keyboard) [right of=devices] {Keyboard} edge (devices);
4258 \end{tikzpicture}
4217 ~ ![](vec/er/Computer){ width=100% }
4218 \
4259 4219
4260 4220 Solution +.# Solution +.#
4261 ~ \begin{tikzpicture}[node distance=7em]
4262 \node[entity] (cellphone) {CELLPHONE};
4263 \node[attribute] (mid) [left of=cellphone] {\key{MIN}} edge (cellphone);
4264 \node[multi attribute] (app) [above of=cellphone] {App\_Installed} edge (cellphone);
4265 \node[attribute] (plan) [right of=cellphone] {Plan} edge (cellphone);
4266 \node[attribute] (carrier) [above right of=plan] {Carrier} edge (plan);
4267 \node[attribute] (price) [right of=plan] {Price} edge (plan);
4268 \end{tikzpicture}
4221 ~ ![](vec/er/Cellphone){ width=100% }
4222 \
4223
4269 4224
4270 4225 Solution +.# Solution +.#
4271 4226 ~ There can be more than one key in the ER model. ~ There can be more than one key in the ER model.
 
... ... Solution +.#
4308 4263 ~ SUPERVISION, a recursive relationship on EMPLOYEE. ~ SUPERVISION, a recursive relationship on EMPLOYEE.
4309 4264
4310 4265 Solution +.# Solution +.#
4311 ~ \begin{tikzpicture}[node distance=7em]
4312 \node[relationship] (contains){BELONGS};
4313 \node[entity] (burger) [left = 1cm of contains] {HAND} edge node[above] {$N$} (contains);
4314 \node[entity] (ingredient) [right = 1cm of contains] {PERSON} edge node[above]{$1$} (contains);
4315 \end{tikzpicture}
4266 ~ ![](vec/er/Belongs){ width=100% }
4267 \
4316 4268
4317 Solution +.#
4318 ~ \begin{tikzpicture}[node distance=7em]
4319 \node[entity] (person) {PERSON};
4320 \node[attribute] (ssn) [left of=person] {\key{SSN}} edge (person);
4321 \node[attribute] (dob) [above of=person] {Date\_Of\_Birth} edge (person);
4322 \node[derived attribute] (age) [right of=person] {Age} edge (person);
4323 \end{tikzpicture}
4269
4270 Solution +.#
4271 ~ ![](vec/er/Person){ width=100% }
4272 \
4324 4273
4325 4274 Solution +.# Solution +.#
4326 ~ \begin{tikzpicture}[node distance=7em]
4327 \node[relationship] (contains){CONTAINS};
4328 \node[entity] (burger) [left = 1cm of contains] {BURGER} edge[total] node[above] {$N$} (contains);
4329 \node[entity] (ingredient) [right = 1cm of contains] {INGREDIENT} edge node[above]{$M$} (contains);
4330 \end{tikzpicture}
4275 ~ ![](vec/er/Contains){ width=100% }
4276 \
4331 4277
4332 4278 Solution +.# Solution +.#
4333 ~ \begin{tikzpicture}[node distance=7em]
4334 \node[relationship] (contains){CONTAINS};
4335 \node[entity] (burger) [left = 1cm of contains] {BURGER} edge[total] node[above] {$N$} (contains);
4336 \node[entity] (ingredient) [right = 1cm of contains] {INGREDIENT} edge node[above]{$M$} (contains);
4337 \end{tikzpicture}
4279 ~ Same as before?
4338 4280
4339 4281 Solution +.# Solution +.#
4340 4282 ~ Otherwise, we couldn't identify entities in it without owner entity. ~ Otherwise, we couldn't identify entities in it without owner entity.
 
... ... Solution +.#
4508 4450
4509 4451 OR OR
4510 4452
4511 \begin{tikzpicture}[node distance=7em]
4512 \node[entity] (person) {Person};
4513 \node[attribute] (pid) [left of=person] {\key{id}} edge (person);
4514 \node[attribute] (name) [above left of=person] {Name} edge (person);
4515 \node[attribute] (address) [below left of=person] {address} edge (person);
4516
4517 \node[relationship] (owns) [above right of=person] {Owns} edge node[above, sloped]{$M$} (person);
4518 \node[entity] (car) [above right of=owns] {Car} edge node[above, sloped]{$N$} (owns);
4519 \node[attribute] (licence) [above left of=car] {\key{licence}} edge (car);
4520 \node[attribute] (model) [above of =car] {model} edge (car);
4521 \node[attribute] (year) [above right of =car] {year} edge (car);
4522
4523 \node[relationship] (accident) [right = 5cm of person] {Accident} edge[total] node[above, sloped]{$M$} (person);
4524 \node[attribute] (report_number) [below of = accident] {\key{Report Number}} edge (accident);
4525 \node[attribute] (time) [right of = accident] {Time} edge (accident);
4526 \node[attribute] (place) [below right of = accident] {Place} edge (accident);
4527 \node[attribute] (damage_amount) [above right of = accident] {Damage\_Amount} edge (accident);
4528
4529 \draw (car) edge[total] node[above, sloped]{$N$} (accident);
4530 \end{tikzpicture}
4453 ![](vec/er/Accident){ width=100% }
4454 \
4531 4455
4532 4456 --- ---
4533 4457
 
... ... Problem +.#
4543 4467
4544 4468 Consider the following E.R. schema: Consider the following E.R. schema:
4545 4469
4546 \begin{tikzpicture}[node distance=8em]
4547 \node[entity] (COUNTRY) {COUNTRY};
4548 \node[attribute] (name) [left of=COUNTRY] {\key{Name}} edge (COUNTRY);
4549 \node[attribute] (population) [below left of=COUNTRY] {Population} edge (COUNTRY);
4550
4551 \node[relationship] (SPEAKS) [below right of=COUNTRY] {SPEAKS} edge node[right, pos=0.4] {$M$} (COUNTRY);
4552 \node[entity] (LANGUAGE) [below right of=SPEAKS] {LANGUAGE} edge node[right, pos=0.5] {$N$} (SPEAKS);
4553 \node[attribute] (code) [left of = LANGUAGE] {\key{Code}} edge (LANGUAGE);
4554 \node[attribute] (symbol) [right of = LANGUAGE] {Name} edge (LANGUAGE);
4555
4556 \node[relationship] (BWF) [below of = LANGUAGE] {B\_W\_F};
4557 \draw (LANGUAGE) to node[left, pos=0.6] {$N$} (BWF.west);
4558 \draw (LANGUAGE) to node[right, pos=0.6] {$M$} (BWF.east);
4559
4560 %\node[relationship] (boundary) [above of = COUNTRY] {S\_B\_W};
4561 %\draw (COUNTRY) to node[left, pos=0.6] {$N$} (boundary.west);
4562 %\draw (COUNTRY) to node[right, pos=0.6] {$M$} (boundary.east);
4563
4564 %\node[relationship] (conversion) [below of =LANGUAGE] {CONVERSION};
4565 %\draw (LANGUAGE) to node[left, pos=0.6] {$N$} (conversion.west);
4566 %\draw (LANGUAGE) to node[right, pos=0.6] {$M$} (conversion.east);
4470 ![](vec/er/Country){ width=100% }
4471 \
4567 4472
4568 %\node[attribute] (timestamp) [below left of=conversion] {\key{Timestamp}} edge (conversion);
4569 %\node[attribute] (rate) [below right of=conversion] {Exchange\_rate} edge (conversion);
4473 where
4570 4474
4571 \node[ident relationship] (hasfor) [right of=COUNTRY] {SINGS} edge node[above, pos=0.4] {$1$} (COUNTRY);
4572 \node[weak entity] (anthem) %[right of=hasfor]
4573 [right = 1cm of hasfor] {NATIONAL\_ANTHEM} edge[total] node[above, pos=0.6]{$M$} (hasfor);
4574 \node[multi attribute] (color) [right =1cm of anthem] {Creator} edge (anthem);
4575 \node[attribute] (name) [below right of = anthem] {\pkey{Name}} edge (anthem);
4475 - "W\_IN" stands for "WRITTEN\_IN", and
4476 - "B\_W\_F" stands for "BORROWS\_WORDS\_FROM".
4576 4477
4577 \node[relationship] (WIN) [above right of =LANGUAGE] {W\_IN};
4578 \draw (LANGUAGE) to node[left, pos=0.6] {$N$} (WIN);
4579 \draw (anthem) to node[right, pos=0.6] {$M$} (WIN);
4580 \end{tikzpicture}
4581
4582 %"S\_B\_W" stands for "SHARES\_A\_BORDER\_WITH".
4583 "W\_IN" stands for "WRITTEN\_IN", and
4584 "B\_W\_F" stands for "BORROWS\_WORDS\_FROM".
4585 4478 For this relationship, on the left-hand side is the language that borrows a word, and on the right-hand side is the language that provides the loanword. For this relationship, on the left-hand side is the language that borrows a word, and on the right-hand side is the language that provides the loanword.
4586 4479
4587 4480 Map that E.R. diagram to a relational database schema. Map that E.R. diagram to a relational database schema.
 
... ... Problem +.#carinfo
4835 4728
4836 4729 Consider the following E.R. schema for the CAR\_INFO database: Consider the following E.R. schema for the CAR\_INFO database:
4837 4730
4838 \begin{tikzpicture}[node distance=8em]
4839 \node[entity] (person) {PERSON};
4840 \node[attribute] (pid) [left of=person] {\key{ID}} edge (person);
4841 \node[attribute] (name) [above left of=person] {Name} edge (person);
4842 \node[multi attribute] (phone) [above of=person] {Phone} edge (person);
4843 \node[attribute] (address) [above right of=person] {Address} edge (person);
4844 \node[attribute] (street) [above right of=address] {Street} edge (address);
4845 \node[attribute] (city) [right of=address] {City} edge (address);
4846 %\node[derived attribute] (age) [right of=person] {Age} edge (person);
4847
4848 \node[relationship] (drives) [below right of=person] {DRIVES} edge node[above, pos=0.1] {$1$} (person);
4849 \node[entity] (car) [below left of=drives] {CAR} edge node[above, pos=0.7] {$1$} (drives);
4850 \node[attribute] (make) [left of=car] {Make} edge (car);
4851 \node[attribute] (year) [below left of =car] {Year} edge (car);
4852 \node[attribute] (brand) [below of =car] {Brand} edge (car);
4853
4854 \node[relationship] (seats) [below left of=person] {SEATS\_IN} edge node[above, pos=0.1] {$N$} (person);
4855 \draw (seats) edge node[above, pos=0.3] {$1$} (car);
4856 \node[attribute] (position) [left of=seats] {Position} edge (seats);
4857
4858 \node[ident relationship] (insured) [right of=car] {INSURED} edge node[above, pos=0.3] {$1$} (car);
4859 \node[weak entity] (insurance) [right = 1cm of insured] {CAR\_INSURANCE} edge[total] node[above, pos=0.7] {$N$} (insured);
4860 \node[attribute] (amount) [above of =insurance] {Covered Amount} edge (insurance);
4861 \node[attribute] (policy) [above right of =insurance] {Policy Number} edge (insurance);
4862 \node[attribute] (company) [below right of =insurance] {Company Name} edge (insurance);
4863 \end{tikzpicture}
4731 ![](vec/er/Car_Info){ width=100% }
4732 \
4864 4733
4865 4734 Note that a car can have at most one driver, $N$ passengers, $N$ insurances, and that car insurances exist only if they are "tied up" to a car (i.e., they are weak entities, and their identifying relationship is called "Insured"). Note that a car can have at most one driver, $N$ passengers, $N$ insurances, and that car insurances exist only if they are "tied up" to a car (i.e., they are weak entities, and their identifying relationship is called "Insured").
4866 4735
File notes/vec/er/Accident.tex added (mode: 100644) (index 0000000..1b3d330)
1 \documentclass[border=20pt]{standalone}
2 \input{template.def}
3
4 \begin{tikzpicture}[node distance=7em]
5 \node[entity] (person) {Person};
6 \node[attribute] (pid) [left of=person] {\key{id}} edge (person);
7 \node[attribute] (name) [above left of=person] {Name} edge (person);
8 \node[attribute] (address) [below left of=person] {address} edge (person);
9
10 \node[relationship] (owns) [above right of=person] {Owns} edge node[above, sloped]{$M$} (person);
11 \node[entity] (car) [above right of=owns] {Car} edge node[above, sloped]{$N$} (owns);
12 \node[attribute] (licence) [above left of=car] {\key{licence}} edge (car);
13 \node[attribute] (model) [above of =car] {model} edge (car);
14 \node[attribute] (year) [above right of =car] {year} edge (car);
15
16 \node[relationship] (accident) [right = 5cm of person] {Accident} edge[total] node[above, sloped]{$M$} (person);
17 \node[attribute] (report_number) [below of = accident] {\key{Report Number}} edge (accident);
18 \node[attribute] (time) [right of = accident] {Time} edge (accident);
19 \node[attribute] (place) [below right of = accident] {Place} edge (accident);
20 \node[attribute] (damage_amount) [above right of = accident] {Damage\_Amount} edge (accident);
21
22 \draw (car) edge[total] node[above, sloped]{$N$} (accident);
23 \end{tikzpicture}
24
25 \end{document}
File notes/vec/er/Bad_Design.tex changed (mode: 100644) (index 0a88db9..d477a12)
1 % !TeX document-id = {9fd243f0-f0ae-45f7-9f88-fa9555c363d3}
2 % !TeX TXS-program:compile = txs:///xelatex/[--shell-escape]
3 \documentclass[convert={outfile=\jobname.svg},border=20pt]{standalone}
1 \documentclass[border=20pt]{standalone}
4 2 \input{template.def} \input{template.def}
5 3
6 4 \begin{tikzpicture}[node distance=2em] \begin{tikzpicture}[node distance=2em]
File notes/vec/er/Belongs.tex added (mode: 100644) (index 0000000..6437cc9)
1 \documentclass[border=20pt]{standalone}
2 \input{template.def}
3
4 \begin{tikzpicture}[node distance=7em]
5 \node[relationship] (contains){BELONGS};
6 \node[entity] (burger) [left = 1cm of contains] {HAND} edge node[above] {$N$} (contains);
7 \node[entity] (ingredient) [right = 1cm of contains] {PERSON} edge node[above]{$1$} (contains);
8 \end{tikzpicture}
9
10 \end{document}
File notes/vec/er/Car_Info.tex added (mode: 100644) (index 0000000..7daac71)
1 \documentclass[border=20pt]{standalone}
2 \input{template.def}
3
4 \begin{tikzpicture}[node distance=8em]
5 \node[entity] (person) {PERSON};
6 \node[attribute] (pid) [left of=person] {\key{ID}} edge (person);
7 \node[attribute] (name) [above left of=person] {Name} edge (person);
8 \node[multi attribute] (phone) [above of=person] {Phone} edge (person);
9 \node[attribute] (address) [above right of=person] {Address} edge (person);
10 \node[attribute] (street) [above right of=address] {Street} edge (address);
11 \node[attribute] (city) [right of=address] {City} edge (address);
12 %\node[derived attribute] (age) [right of=person] {Age} edge (person);
13
14 \node[relationship] (drives) [below right of=person] {DRIVES} edge node[above, pos=0.1] {$1$} (person);
15 \node[entity] (car) [below left of=drives] {CAR} edge node[above, pos=0.7] {$1$} (drives);
16 \node[attribute] (make) [left of=car] {Make} edge (car);
17 \node[attribute] (year) [below left of =car] {Year} edge (car);
18 \node[attribute] (brand) [below of =car] {Brand} edge (car);
19
20 \node[relationship] (seats) [below left of=person] {SEATS\_IN} edge node[above, pos=0.1] {$N$} (person);
21 \draw (seats) edge node[above, pos=0.3] {$1$} (car);
22 \node[attribute] (position) [left of=seats] {Position} edge (seats);
23
24 \node[ident relationship] (insured) [right of=car] {INSURED} edge node[above, pos=0.3] {$1$} (car);
25 \node[weak entity] (insurance) [right = 1cm of insured] {CAR\_INSURANCE} edge[total] node[above, pos=0.7] {$N$} (insured);
26 \node[attribute] (amount) [above of =insurance] {Covered Amount} edge (insurance);
27 \node[attribute] (policy) [above right of =insurance] {Policy Number} edge (insurance);
28 \node[attribute] (company) [below right of =insurance] {Company Name} edge (insurance);
29 \end{tikzpicture}
30
31 \end{document}
File notes/vec/er/Cellphone.tex added (mode: 100644) (index 0000000..560c3a6)
1 \documentclass[border=20pt]{standalone}
2 \input{template.def}
3
4 \begin{tikzpicture}[node distance=7em]
5 \node[entity] (cellphone) {CELLPHONE};
6 \node[attribute] (mid) [left of=cellphone] {\key{MIN}} edge (cellphone);
7 \node[multi attribute] (app) [above of=cellphone] {App\_Installed} edge (cellphone);
8 \node[attribute] (plan) [right of=cellphone] {Plan} edge (cellphone);
9 \node[attribute] (carrier) [above right of=plan] {Carrier} edge (plan);
10 \node[attribute] (price) [right of=plan] {Price} edge (plan);
11 \end{tikzpicture}
12
13 \end{document}
File notes/vec/er/Computer.tex added (mode: 100644) (index 0000000..d79068f)
1 \documentclass[border=20pt]{standalone}
2 \input{template.def}
3
4 \begin{tikzpicture}[node distance=7em]
5 \node[entity] (computer) {COMPUTER};
6 \node[attribute] (pid) [left of=computer] {\key{Id}} edge (computer);
7 \node[multi attribute] (os) [above of=computer] {Operating\_System} edge (computer);
8 \node[attribute] (devices) [right of=computer] {Devices} edge (computer);
9 \node[attribute] (mouse) [above right of=devices] {Mouse} edge (devices);
10 \node[attribute] (keyboard) [right of=devices] {Keyboard} edge (devices);
11 \end{tikzpicture}
12
13 \end{document}
File notes/vec/er/Constraint2.tex changed (mode: 100644) (index 1fac64e..180a47a)
1 % !TeX document-id = {9fd243f0-f0ae-45f7-9f88-fa9555c363d3}
2 % !TeX TXS-program:compile = txs:///xelatex/[--shell-escape]
3 \documentclass[convert={outfile=\jobname.svg},border=20pt]{standalone}
1 \documentclass[border=20pt]{standalone}
4 2 \input{template.def} \input{template.def}
5 3
6 4 \begin{tikzpicture}[node distance=5em] \begin{tikzpicture}[node distance=5em]
File notes/vec/er/Contains.tex added (mode: 100644) (index 0000000..dca2dd2)
1 \documentclass[border=20pt]{standalone}
2 \input{template.def}
3
4 \begin{tikzpicture}[node distance=7em]
5 \node[relationship] (contains){CONTAINS};
6 \node[entity] (burger) [left = 1cm of contains] {BURGER} edge[total] node[above] {$N$} (contains);
7 \node[entity] (ingredient) [right = 1cm of contains] {INGREDIENT} edge node[above]{$M$} (contains);
8 \end{tikzpicture}
9
10 \end{document}
File notes/vec/er/Country.tex added (mode: 100644) (index 0000000..ca4e3e6)
1 \documentclass[border=20pt]{standalone}
2 \input{template.def}
3
4 \begin{tikzpicture}[node distance=8em]
5 \node[entity] (COUNTRY) {COUNTRY};
6 \node[attribute] (name) [left of=COUNTRY] {\key{Name}} edge (COUNTRY);
7 \node[attribute] (population) [below left of=COUNTRY] {Population} edge (COUNTRY);
8
9 \node[relationship] (SPEAKS) [below right of=COUNTRY] {SPEAKS} edge node[right, pos=0.4] {$M$} (COUNTRY);
10 \node[entity] (LANGUAGE) [below right of=SPEAKS] {LANGUAGE} edge node[right, pos=0.5] {$N$} (SPEAKS);
11 \node[attribute] (code) [left of = LANGUAGE] {\key{Code}} edge (LANGUAGE);
12 \node[attribute] (symbol) [right of = LANGUAGE] {Name} edge (LANGUAGE);
13
14 \node[relationship] (BWF) [below of = LANGUAGE] {B\_W\_F};
15 \draw (LANGUAGE) to node[left, pos=0.6] {$N$} (BWF.west);
16 \draw (LANGUAGE) to node[right, pos=0.6] {$M$} (BWF.east);
17
18 %\node[relationship] (boundary) [above of = COUNTRY] {S\_B\_W};
19 %\draw (COUNTRY) to node[left, pos=0.6] {$N$} (boundary.west);
20 %\draw (COUNTRY) to node[right, pos=0.6] {$M$} (boundary.east);
21
22 %\node[relationship] (conversion) [below of =LANGUAGE] {CONVERSION};
23 %\draw (LANGUAGE) to node[left, pos=0.6] {$N$} (conversion.west);
24 %\draw (LANGUAGE) to node[right, pos=0.6] {$M$} (conversion.east);
25
26 %\node[attribute] (timestamp) [below left of=conversion] {\key{Timestamp}} edge (conversion);
27 %\node[attribute] (rate) [below right of=conversion] {Exchange\_rate} edge (conversion);
28
29 \node[ident relationship] (hasfor) [right of=COUNTRY] {SINGS} edge node[above, pos=0.4] {$1$} (COUNTRY);
30 \node[weak entity] (anthem) %[right of=hasfor]
31 [right = 1cm of hasfor] {NATIONAL\_ANTHEM} edge[total] node[above, pos=0.6]{$M$} (hasfor);
32 \node[multi attribute] (color) [right =1cm of anthem] {Creator} edge (anthem);
33 \node[attribute] (name) [below right of = anthem] {\pkey{Name}} edge (anthem);
34
35 \node[relationship] (WIN) [above right of =LANGUAGE] {W\_IN};
36 \draw (LANGUAGE) to node[left, pos=0.6] {$N$} (WIN);
37 \draw (anthem) to node[right, pos=0.6] {$M$} (WIN);
38 \end{tikzpicture}
39
40 \end{document}
File notes/vec/er/Entity_Instructor.tex changed (mode: 100644) (index 9f29d5f..aff21e5)
1 % !TeX document-id = {9fd243f0-f0ae-45f7-9f88-fa9555c363d3}
2 % !TeX TXS-program:compile = txs:///xelatex/[--shell-escape]
3 \documentclass[convert={outfile=\jobname.svg},border=20pt]{standalone}
1 \documentclass[border=20pt]{standalone}
4 2 \input{template.def} \input{template.def}
5 3
6 4 \begin{tikzpicture}[node distance=7em] \begin{tikzpicture}[node distance=7em]
File notes/vec/er/Naming.tex changed (mode: 100644) (index 1437e16..e884bb8)
1 % !TeX document-id = {9fd243f0-f0ae-45f7-9f88-fa9555c363d3}
2 % !TeX TXS-program:compile = txs:///xelatex/[--shell-escape]
3 \documentclass[convert={outfile=\jobname.svg},border=20pt]{standalone}
1 \documentclass[border=20pt]{standalone}
4 2 \input{template.def} \input{template.def}
5 3
6 4 \begin{tikzpicture}[node distance=7em] \begin{tikzpicture}[node distance=7em]
File notes/vec/er/Person.tex added (mode: 100644) (index 0000000..420bb68)
1 \documentclass[border=20pt]{standalone}
2 \input{template.def}
3
4 \begin{tikzpicture}[node distance=7em]
5 \node[entity] (person) {PERSON};
6 \node[attribute] (ssn) [left of=person] {\key{SSN}} edge (person);
7 \node[attribute] (dob) [above of=person] {Date\_Of\_Birth} edge (person);
8 \node[derived attribute] (age) [right of=person] {Age} edge (person);
9 \end{tikzpicture}
10
11
12 \end{document}
File notes/vec/er/Pilot.tex added (mode: 100644) (index 0000000..03a2761)
1 \documentclass[border=20pt]{standalone}
2 \input{template.def}
3
4 \begin{tikzpicture}[node distance=8em]
5 \node[entity] (person) {PILOT};
6 \node[attribute] (pid) [left of=person] {\key{ID}} edge (person);
7 \node[attribute] (name) [above left of=person] {Name} edge (person);
8 \node[attribute] (phone) [above of=person] {Experience} edge (person);
9
10 \node[relationship] (drives) [below of=person] {ASSIGNED\_TO} edge node[right, pos=0.1] {$N$} (person);
11 \node[entity] (plane) [below of=drives] {PLANE} edge [total] node[right, pos=0.7] {$1$} (drives);
12 \node[attribute] (make) [left of=plane] {\key{TailID}} edge (plane);
13 \node[attribute] (maxS) [below left of =plane] {MaxSpeed} edge (plane);
14 \node[attribute] (airPlaneType) [below of = plane] {AirPlaneType} edge (plane);
15 \end{tikzpicture}
16
17 \end{document}
File notes/vec/er/Rel_Instance.tex changed (mode: 100644) (index 348d484..49d047a)
1 % !TeX document-id = {9fd243f0-f0ae-45f7-9f88-fa9555c363d3}
2 % !TeX TXS-program:compile = txs:///xelatex/[--shell-escape]
3 \documentclass[convert={outfile=\jobname.svg},border=20pt]{standalone}
1 \documentclass[border=20pt]{standalone}
4 2 \input{template.def} \input{template.def}
5 3
6 4 \begin{tikzpicture}[node distance=2em] \begin{tikzpicture}[node distance=2em]
File notes/vec/er/Role_Name1.tex changed (mode: 100644) (index 9c39784..354254b)
1 % !TeX document-id = {9fd243f0-f0ae-45f7-9f88-fa9555c363d3}
2 % !TeX TXS-program:compile = txs:///xelatex/[--shell-escape]
3 \documentclass[convert={outfile=\jobname.svg},border=20pt]{standalone}
1 \documentclass[border=20pt]{standalone}
4 2 \input{template.def} \input{template.def}
5 3
6 4 \begin{tikzpicture}[node distance=5em] \begin{tikzpicture}[node distance=5em]
File notes/vec/er/Role_Name2.tex changed (mode: 100644) (index b8a1710..a4e744c)
1 % !TeX document-id = {9fd243f0-f0ae-45f7-9f88-fa9555c363d3}
2 % !TeX TXS-program:compile = txs:///xelatex/[--shell-escape]
3 \documentclass[convert={outfile=\jobname.svg},border=20pt]{standalone}
1 \documentclass[border=20pt]{standalone}
4 2 \input{template.def} \input{template.def}
5 3
6 4 \begin{tikzpicture}[node distance=5em] \begin{tikzpicture}[node distance=5em]
File notes/vec/er/Role_Name3.tex changed (mode: 100644) (index 1e0e6e1..5feef1f)
1 % !TeX document-id = {9fd243f0-f0ae-45f7-9f88-fa9555c363d3}
2 % !TeX TXS-program:compile = txs:///xelatex/[--shell-escape]
3 \documentclass[convert={outfile=\jobname.svg},border=20pt]{standalone}
1 \documentclass[border=20pt]{standalone}
4 2 \input{template.def} \input{template.def}
5 3
6 4 \begin{tikzpicture}[node distance=5em] \begin{tikzpicture}[node distance=5em]
File notes/vec/er/Stays_At.tex added (mode: 100644) (index 0000000..bb77f8c)
1 \documentclass[border=20pt]{standalone}
2 \input{template.def}
3
4 \begin{tikzpicture}[node distance=7em]
5 \node[relationship] (contains){STAYS\_AT};
6 \node[entity] (person) [above = 1cm of contains] {PERSON} edge node[right] {$N$} (contains);;
7 \node[attribute] (ssn) [left of=person] {\key{SSN}} edge (person);
8 \node[attribute] (dob) [above = .5cm of person] {Date\_Of\_Birth} edge (person);
9 \node[entity] (burger) [below of= contains] {PLACE} edge node[right] {$1$} (contains);
10 \node[attribute] (dob) [below = .5cm of burger] {\key{Address}} edge (burger);
11 \node[attribute] (ssn) [left of=burger] {Rooms} edge (burger);
12 \end{tikzpicture}
13
14 \end{document}
File notes/vec/uml/Flight.tex added (mode: 100644) (index 0000000..d9023c1)
1 \documentclass[border=20pt]{standalone}
2 \input{template.def}
3
4 \begin{tikzpicture}[scale = 0.8]
5 \begin{class}[text width=7cm]{Flight}{0,0}
6 \attribute{flightNumber : Integer}
7 \attribute{departureTime : Date}
8 \attribute{flightDuration : Minutes}
9 \attribute{departingAirport : String}
10 \attribute{arrivingAirport : String}
11 \operation{delayFlight(numberOfMinutes : Minutes)}
12 \operation{getArrivalTime( ) : Date}
13 \end{class}
14 \begin{class}{Plane}{11, -0.8}
15 \attribute{airPlaneType : String}
16 \attribute{maximumSpeed : MPH}
17 \attribute{maximumDistance : Miles}
18 \attribute{tailID : String}
19 \end{class}
20 \association{Plane}{}{0..1}{Flight}{0..*}{}
21 \end{tikzpicture}
22
23 \end{document}
File notes/vec/uml/template.def added (mode: 100644) (index 0000000..06be5f3)
1 \renewcommand\familydefault{\sfdefault} % Default family: serif
2
3 \usepackage[simplified]{pgf-umlcd}
4 \begin{document}
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