LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
M.C.A. DEGREE EXAMINATION - COMPUTER APP.
THIRD SEMESTER – APRIL 2012
CA 3800 - DATABASE MANAGEMENT CONCEPTS
Date : 21-04-2012
Time : 1:00 - 4:00
Dept. No.
Max. : 100 Marks
PART – A
Answer all questions:
10 X 2 = 20
1. What is database management system?
2. List the types of attributes.
3. What are the clauses in SQL expressions?
4. Define trigger.
5. What is cache memory?
6. Define overflow bucket.
7. What are the steps involved in query processing?
8. Define query optimization.
9. Give the properties of transaction.
10. What is buffer management?
PART – B
Answer all questions:
11. a) Write short note on disadvantages of file processing.
Or
b) Explain basic ER notations with an example.
12. a) Discuss various parts of SQL language.
Or
b) Describe about security violation and authorization.
13. a) Elucidate various levels of RAID.
Or
b) Explain the structure of B+ indexing of files.
14. a) Discuss various selection operation algorithms.
5 X 8 = 40
Or
b) Write short notes on materialized views.
15. a) Write note on concurrent execution of transaction.
Or
b) "Oracle is an efficient relational database language"- justify.
PART – C
Answer any two questions:
2 X 20 =40
(Q. No. 16 is compulsory)
16. a) Explain the following SQL operations:
(i) Set operations (ii) Aggregate functions.
b) Discuss database system structure with diagram.
17. a) Explain BCNF with example.
b) Elucidate the storage device hierarchy with necessary diagram.
18. a) Discuss the various equivalence rules.
b) Explain lock-based protocols of transaction.
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