Implementation of integrity rules, Database Management System

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Question 1 Describe the following-

Clustering
Indexing

Question 2 Explain the following with suitable real time examples-

Implementation of Integrity rules
Relational Algebra Operators

Question 3 Discuss the following with relevant examples-

Attributes
Entities
Keys
Weak entity types

Question 4 Describe the centralized and client / server architectures of DBMS

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