How it is related to data independence?

Answer 1

Hi,

Data Independence refers to the immunity of user application to make changes in the definition and organization of Data.

There are three types of Data Independence -

1. Logical Data Independence - The ability to change the logical (conceptual) schema without changing the External schema (User View) is called logical data independence.

2. Physical Data Independence - The ability to change the physical schema without changing the logical schema is called physical data independence.

3. View Data Independence - always independent,no effect.