1.

What is meant by “data independence”? Make a list of data independence capabilities.

Answer»

Data independence is the ability to modify a scheme definition in one level without affecting a scheme definition in a higher level.

data independence capabilities : 

  • Physical Data Independence has ability to modify the scheme followed at the physical level without affecting the scheme followed at the conceptual level.
  • Logical Data Independence has ability to modify the conceptual scheme without causing any changes in the schemes followed at view levels


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