Question: Let E 1 , E 2 , E 3 be the three entities in an ER Diagram with simple and single valued attributes. R 1

Let E1, E2, E3 be the three entities in an ER Diagram with simple and single valued attributes. R1 and R2 be the two relationships between E1 and E2 and R3 and R4 be the two relationships between E2 and E3 where R1 is one to many, R2 is many to many, R3 is one to one and R4 is many to many. R1,R2,R3 and R4 do not have any attributes of their own.
What are the minimum number of tables required to represent this situation in the relational model. Also Explain it diagrammatically.

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