Discuss the concept of data independence, Database Management System

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Question:

a) Discuss the concept of data independence, explaining its importance in a database environment.

b) To address the issue of data independence, the ANSI-SPARC three-level architecture was proposed. Compare and contrast the three levels of this model. Make use of a diagram in your discussion.

c) The term integrity refers to the accuracy or correctness of the data in the database. Define the following terms:

(i) Domain Integrity
(ii) Entity Integrity
(iii) Referential Integrity

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