Learning Goal: I’m working on a programming exercise and need an explanation and answer to help me learn.
1. Design an Entity Relationship (ER) Model to represent the above requirements. (2 Marks)
2. Convert the ER Diagram that presented in part-1 to Rational Schema.
Explain and distinct between disjoint and overlapping constraints.
Illustrate your answer with suitable examples for each constraint.
Define Cardinality Ratios for binary relationship? What are possible Cardinality Ratios for Binary Relationship? Suppose in SEU, there are some departments consist of many employees.
What is the cardinality ratio for DEPARTMENT:EMPLOYEE?In SEU,
identify Cardinality ratios between the following entities:
Entity 1 Cardinality Ratio Entity 2
CLASSROOM ______________ PODIUM
STUDENT ______________ CLASS
INSTRUCTOR ______________ TECHNICAL STAFF
ROOM ______________ BRANCH
STUDENT ______________ TEACHER
INSTRUCTOR ______________ DEAN
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