Convert the er - diagram into a relational database, Database Management System

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Convert the following ER - diagram (Entity Relationship Diagram) into a relational database (the primary keys are underlined):      

2160_Convert the following ER - diagram into a relational database.png

Ans:  The relational database schema for the following ER diagram is like this:

A (a1, b1, a2, a3)

B (b1, b2, b3, b4)

C (c1, c2)

D (b1, c1, r21)


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