1. CSCI 6315 Applied Database Systems – Exercise (1)
Xiang Lian
The University of Texas Rio Grande Valley
Edinburg, TX 78539

2. ER Diagrams
Please draw an ER diagram for the following three tables (entities, relationships, attributes, primary keys, cardinality constraints, etc.)
Sailors (sid, sname)
Reserves (sid, bid, date)
Boats (bid, bname, color)

3. ER Diagrams (cont'd)
Please draw an enhanced ER diagram for entities like undergraduate students, freshman, sophomore, junior, and senior students.
For senior students, they have supervisors who supervise their "senior project“ course
Please specify the participation and disjoint constraints
Please provide relational tables based on the ER diagram you designed above