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Statement 1: We can create foreign key constraints on relational schema derived from ER diagram Statement 2: Relational schema cannot be derived from an ER diagram

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Statement 1: We can create foreign key constraints on relational schema derived from ER diagram

Statement 2: Relational schema cannot be derived from an ER diagram

(a) Both the statements are true

(b) Both the statements are false

(c) Statement 1 is true and Statement 2 is false

(d) Statement 2 is true and statement 1 is false

The question was asked in my homework.

My doubt is from Reduction to Relational Schema in section Database Design and the ER Model of RDBMS

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The correct choice is (c) Statement 1 is true and Statement 2 is false

The best explanation: We can create foreign key constraints on relational schema derived from ER diagram and also it is possible to derive relational schema from ER diagrams.

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