Question

Distinguish between logical and physical data independence

Answer 1

Explanation:

The new changes are absorbed by mapping techniques. Logical data independence in the ability to modify the logical schema without causing application program to be rewritten. ... Physical data independence is when the physicalschema is altered without having the need to rewrite application programs for the alteration.

Answer 2

Logical data independence is the ability to modify the conceptual scheme without making it necessary to rewrite application programs. ... Physical data independence is the ability to modify the physical schema without causing application programs to be rewritten.