Relational Schema
nSpecifies types of objects in domain, attributes of each type of object & types of relations between objects
n
Teach
Student
Intelligence
Registration
Grade
Satisfaction
Course
Difficulty
Professor
Teaching-Ability
In
Take
Classes
Relations
Attributes
The university can be described in an organized form using a relational database.  The schema of a database tells us what types of objects we have, what are the attributes of these objects that are of interest, and how the objects can relate to each other.