Dr. A.P.J. Abdul Kalam University BE IV SEM (IT) Data Base Management System [IT-225] June 2021 Question Paper

Dr. A.P.J. Abdul Kalam University

Bachelor of Engineering

Fourth Semester Examination, June-2021

Data Base Management System [IT-225]

Branch: IT

Time: 3:00 Hrs Max Marks 70

Note : 1. Attempt any five questions out of Eight.

2. All question carry equal marks.

Q.1 (a) What do you mean by deadlock?

(b) What is serializability. Explain its types

Q.2 (a) What do you means by functions of DBA?

(b) Explain the aggregation.

Q.3 (a) What is DBMS? Explain basic operations of DBMS.

(b) Explain levels of Database with the help of suitable example.

Q.4 (a) Explain check constraints.

(b) Explain distributed database.

Q.5 (a) What is E-R model? Draw any E-R diagram of your choice.

(b) What is an Entity? Explain the different types of entities.

Q.6 (a) Explain the integrity constraints.

(b) What is a key? Explain primary key and candidate key.

Q.7 (a) Discuss the various disadvantages in the file system and explain how it

can be overcome by the database system.

(b) Explain the functional dependence with example.

Q.8 (a) Write a short note (Any two) -

i) Relational calculus

ii) Normalization

iii) SQL

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