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Question
Paper Code :
M.C.A
DEGREE EXAMINATION, NOV/DEC 2006
MC
1654 – DATABASE MANAGEMENT SYSTEMS
(Regulation
2005)
Time
: Three Hours Maximum
: 100 marks
Answer
ALL Questions
PART
A – (10 X 2 = 20 marks)
1.
How is the database management system indispensable in data handling?
2.
What is semantic data model?
3.
What are integrity constraints in relational model?
4.
What is the use of Embedded SQL?
5.
Define hash based indexing in data storage operations.
6.
What are composite search keys? Explain with a example.
7.
What do you meant by query optimization?
8.
What does a query evaluation plan consists of?
9.
State the purpose of locking protocols in DBMS.
10.
What are the two important functions of Recovery Management?
PART
B – (5 X 16 = 80 marks)
11.
(a) (i) Narrate the advantage of DBMS systems.
(ii)
Discuss the steps involved in the design of database systems.
Or
(b)
(i) Illustrate the concept of relationships and relationship sets in Entity Relationship
(ER) model with a suitable example.
(ii)
Elaborate on the key constraint construct in ER models with an example.
12.
(a) (i) What is the use of cursors in embedded SQL? Specify the basic cursor
definition format, giving illustrative examples.
(ii)
Give an example of foreign key constraints in relational models and develop an
SQL statement for the same.
Or
(b)
How is the Relational Model designed based on the ER models? Discuss with
respect to the issues of tables, relationship without constraints and key
constraints?
13.
(a) Explain the mechanism of hash based indexing with an example.
Or
(b)
Describe the various levels of RAID systems in detail.
14.
(a) Explain the working of Query Optimizer with a block diagram.
Or
(b)
Discuss the issues in implementing optimization strategies for the JOIN queries.
15.
(a) What is the role of COMMIT, ROLLBACK and SAVEPOINT SQL statements in
transaction management?
Or
15.
(b) Write short notes on Buffer Management.
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