Database Design The following are the main entity types of the academic institution database.

A Question on my test review that i need help with please.

Database Design

The following are the main entity types of the academic institution database. For each entity type, we provide some of the corresponding attributes. Use this information in order to: (a) Build an Enhanced E-R diagram; (b) Transform the Enhanced E-R diagram to a relational database. Identify the primary key(s) and the foreign key(s) for each relation. Draw the relational integrality constraints; (c) For each of the relations created, indicate its normal form. If the relation is not in the 3NF, decompose it into 3NF relations.

1.    Instructor: The main attributes are identification number, name, address, name of the department and college s/he is working for, area of specialty, etc.

2.    Course: The main attributes are course number, name, prerequisites, number of credit hours, group of courses it belongs to, etc. 

3.    Student: The main attributes are identification number, name, address, birthday, gender, department and college s/he is in, etc. 

4.    Classroom: The main attributes are room number, name of the building, capacity, and description of any special feature (for example, media equipment, computers, video, etc.).   

5.    Period: The main attributes are period number, start time, and end time.

6.    Assignment: This is an associative entity. Its attributes are number of students taking a particular course taught by a particular professor during a particular time period.

Note that the relation between students and courses is a many-to-many relationship. Students get a grade for each course they take.

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