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1) What do you mean by E-R model? What are the different symbols used to draw E-R diagram? Draw E-R diagram for the following organizations:

a. Public Library
b. Educational Institute
c. Hospital

2) Describe ER model with appropriate ex.

3) What do you mean by data security? describe the threats and risk involve in database security.

4)  describe how cryptography, digital signature, user and database privileges secure the database.

5) What do you mean by data encryption? Describe various viruses and worms.

6) What are the risks to information system data and resources? Describe the concept of data base security with special reference to authentication.

7) Compare physical and logical database models.

8) prepare down the advantages of relational DBMS.

DBMS, Programming

  • Category:- DBMS
  • Reference No.:- M910733

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