Relational calculus is :

I. equivalent to relational algebra in its capabilities.

II. it is stronger than relational algebra.

III. it is weaker than relational algebra.

IV. it is based on predicate calculus of formal logic.

Now answer which one is correct option ?

A (I) and (IV) are true

B (II) and (IV) are true

C only (III) is true

D (III) and (IV) are true

Answer & Explanation
Option: [D]