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2 pages
1. What is your understanding of Entity Integrity Vs Referential Integrity in ERD model. Illustrated with simple examples for ease of understanding of the concepts.
2. Describe various types of keys in ERD model (Primary, Foreign, Superkey etc) with simple examples.
3. Describe 3 entities and illustrate different types of joins using these 3 entities assume you have three entities student, course & enrollment and these tables are related.
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