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A

Section A: Long Answer Questions

Attempt any TWO questions.

3 questions·10 marks each
1long10 marks

What is a Database Management System (DBMS)? Explain the three-schema architecture of a DBMS and the concept of data independence.

dbmsarchitecture
2long10 marks

Explain the Entity-Relationship (ER) model. Draw an ER diagram for a university database and explain different types of entities, attributes, and relationships.

er-modeldata-modeling
3long10 marks

How are the different types of entities and relationships of an ER diagram reduced into tables? Explain with examples for each type of entity and relationship.

er-to-relationalmapping
B

Section B: Short Answer Questions

Attempt any EIGHT questions.

9 questions·5 marks each
4short5 marks

Differentiate between a file system and a DBMS.

dbms
5short5 marks

Explain the roles of a Database Administrator (DBA).

dbmsdba
6short5 marks

What are the different types of database users?

dbms
7short5 marks

Differentiate between primary key, candidate key, and foreign key.

keysrelational-model
8short5 marks

Explain the concept of a weak entity set with an example.

er-model
9short5 marks

What is a view in SQL? Explain its advantages.

sqlview
10short5 marks

Differentiate between the DELETE, DROP, and TRUNCATE commands.

sql
11short5 marks

Explain aggregate functions in SQL with examples.

sql
12short5 marks

What is a trigger? Explain with an example.

sqltrigger