CS450 HW2

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Homework #2 Due the midnight of April 15th. 100 Points In this homework, you create an SQL script to build

the MOVIES database according to the schema shown in the next page.

Your script must be a text file (.txt). No other file formats (Word, Powerpoint, PDF, etc.) will be accepted.

You must also meet all the constraint requirements given later.

You can use either MySQL or Oracle as the platform

CS450 HW2

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The Movies Database

PERSON Name Sex

varchar(40)

B_date D_date B_place

date date varchar(40)char(1)

FILM Title

varchar(60)

Imdb_nm

char(9)

Imdb_tt

char(9)

R_year

dec(4,0)

Rating

char(4)

PLAYS_IN

Actor

char(9)

Movie

char(9)

Char_name

varchar(60)

INVOLVES_IN

Actor

char(9)

Movie

char(9)

Function

varchar(12)

CS450 HW2

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Submission

Send an email to the TA (ykim9@gmu.edu):– Subject: 450 HW2 from your name

• Replace the italic part by your own name

– Message body:• Give your full name and the last 4 digits of GMU ID.

• Specify the platform you use (MySQL or Oracle).

– Your SQL script as an attachment, named asLastnameLast4DigitsOfGID-hw2.txt

• For example, Joe Smith’s GMU ID ends with 1234, and his attachment must be named Smith-1234-hw2.txt

CS450 HW2

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Platform

MySQL– On Windows: follow the instructions in Lecture 07

for installation.– On Linux: Sorry, you are own your own

Oracle– Read the instructions in http://

labs.ite.gmu.edu/reference/faq_oracle.htm to setup your Oracle account.

– Contact the TA for further assistance.

CS450 HW2

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Answer Outline

In the first step, use the “create database MOVIES;” command to create the database.

Use the “use MOVIES;” command to switch to MOVIES as the default database.

Use the “create table” command to create the 4 tables: PERSON, FILM, INVOLVES_IN, and PLAYS_IN.

If necessary, use the “alter table” command to add foreign keys.

Use the “show columns from table” command to show the schemas of the three tables.

CS450 HW2

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Constraint Requirements

Primary keys of the tables must be specified. All primary key attributes cannot be null. All foreign keys in the database schema must be

defined. In the PERSON table,

– Name and B_date (birth date) cannot be null.– B_date must be greater/later than or equal to 1800-01-01.– D_date (death date) is defaulted to be null.

In the FILM table, title cannot be null. In the PLAYS_IN table, character_name is

defaulted to be “unknown”.

CS450 HW2

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Hints

First, you may want to practice SQL commands interactively in the “MySQL Command Line Client”

While developing/testing your script (with Notepad for instance), copy-and-paste the commands in the script to the MySQL client window and the commands will be executed.

Check the outputs of in the window for correctness. Keep in mind that every test will have to start with an

empty state --- use the “drop table” or “drop database” commands to make sure if it.