CD Collection

Hector Urtubia

Fall 2002

Summary

Motivation and Objective Technologies Used Project Design Database Design and Integration Demo

Motivation and Objective

Hands-on project Gain experience on database design Project design and database integration To have a final product that is (somewhat)

useful To learn more about SQL

Technologies used

Programming Language:– PHP

Database Package– MySQL

PHP

PHP Hypertext Processor Very popular web scripting language

– Embedded into HTML– Fast development cycle

Open Source Fairly complete API Extensive database support

MySQL

Fast Relational Database Management System Uses SQL as its query language Open Source Multi-platform Interfaces to many languages: PHP, Perl,

Java, C, Python

Project Design

In short: A database of CD’s. Special features:

– CD’s classified by artist and country– Efficient search mechanism– User based

User privileges

– Ratings system– Interesting Reports based on collected data

Database Design: Main Tables

cd_id artist_id name Year description

date

cds

artistsartists_id name country_id description

countrycountry_id name

Database Design: User Tables

usersuser_id username password email session_id

user_privileges

user_id privilege

Database Design: Additional Tables

cd_viewscd_id user_id date

cd_ratingscd_id user_id text rating date

User Authentication

Client sends username, password pair Server sees if username,password pair match

the database.– No: do nothing– Yes: server sets cookie on client with user_id and a

randomly chosen session_id. Server also stores the session_id on the DB.

Seeing if a user is logged in

Server sees if cookies with the user_id and the session_id are stored on the client

If the user_id and session_id cookies match the ones on the DB, then the user is authentic

To log out a user, we must only set the session_id to NULL

Future Work

Extend the design to make it able to be a CD Shopping Store.

Reorganize some of the code and make more object oriented

Extend the design so it can not only have CD’s but arbitrary items

DEMO