Question

Difference between logical and physical independence - which is harder to achieve

Answer 1

Answer:

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

i hope it helps you

Answer 2

Answer:

btaya usne

usne likha Maine likha ek hi (●’◡’●) baat