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What Is Data Independence in DBMS ?

The ability to modify a schema definition in one level without affecting a schema definition in the next level is called data independence.
There are two levels of data independence.
  1. Physical Data Independence.
  2. Logical Data Independence.

1. Physical Data Independence :

It is the  ability to modify the physical schema without causing application programs to be rewritten.

2. Logical Data Independence :

It is the ability to modify the logical schema without causing application program to be rewritten.
Logical data independence is more difficult than is the physical data independence.

What Is Data Independence in DBMS ? Reviewed by Hardik Pandya on 8:50:00 PM Rating: 5

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