What is your understanding of Entity Integrity Vs Referential Integrity.

1. What is your understanding of Entity Integrity Vs Referential Integrity. Illustrated with simple examples for ease of understanding of the concepts.

2. Describe various types of keys (Primary, Foreign, Super, Composite, Unique, and Alternate) with simple examples.

3. Describe 3 entities (student, course & enrollment) and illustrate different types of joins using these 3 related entities.

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