Lab (1) - DBMS
Fall 2007

Objectives
      
To learn to convert an ER diagram to its Relational Schema
       To design an Access database system  based on the Relational Schema
       To create some simple queries

Preparations
Create a directory for your group and save your files in that directory.

You are to create relational database based on an ER diagram that is given: The ER diagram

This ER diagram is for an airline service with the following key requirements and constraints:

( 1 ) The database represents each AIRPORT, keeping its unique AirportCode, the AIRPORT Name, and the City and State in which the AIRPORT is located.

( 2 ) Each airline FLIGHT has a unique number, the Airline for the FLIGHT, and the Weekdays on which the FLIGHT is scheduled (for example, every day of the week except Sunday can be coded as X7).

( 3 ) A FLIGHT is composed of one or more FLIGHT LEGs (for example, flight number CO1223 from New York to Los Angeles may have two FLIGHT LEGs: leg 1 from New York to Houston and leg 2 from Houston to Los Angeles). Each FLIGHT LEG has a DEPARTURE AIRPORT and Scheduled Departure Time, and an ARRIVAL AIRPORT and Scheduled Arrival Time.

( 4 ) A LEG INSTANCE is an instance of a FLIGHT LEG on a specific Date (for example, CO1223 leg 1 on July 30, 1989). The actual Departure and Arrival AIRPORTs and Times are recorded for each flight leg after the flight leg has been concluded. The Number of available seats and the AIRPLANE used in the LEG INSTANCE are also kept.

( 5 ) The customer RESERVATIONs on each LEG INSTANCE include the Customer Name, Phone, and Seat Number(s) for each reservation.

( 6 ) Information on AIRPLANEs and AIRPLANE TYPEs are also kept. For each AIRPLANE TYPE (for example, DC-10), the TypeName, manufacturing Company, and Maximum Number of Seats are kept. The AIRPORTs in which planes of this type CAN LAND are kept in the database. For each AIRPLANE, the AirplaneId, Total number of seats, and TYPE are kept.

Lab Activity (1)
You need to use the handout for Chapter (7) to convert this ER diagram to a relational schema.  It is very important to do this very carefully and accurately. 

Hints:  See the hint, if you have really tried your best. Hint1

Once you are done with your relational database, let me see it before you start the next activity.

Lab Activity (2)
If you need a tutorial for MS Access, please visit the Resource Page for the course. 
Open MS Access.  Create a new database, give it any name as you wish (perhaps groupnameAccess).  Now you have a blank database.   You need to figure out the rest by discussing it among yourselves.  Note that Access also allows you to view the relational schema as a diagram.  Try to find out how. After you create your database, you need to add some fake records.


If you wish to see the solution click here, ar you sure?, then click here.
Before you leave the lab, save the ACCESS file somewhere permanent or e-mail it to yourself for later use