Jawaharlal Nehru Technological University Hyderabad 2010-5th Sem M.C.A Iester Supplementary s DISTRIBUTED DATABASES - exam paper

code No: 44
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
M.C.A IV Semester Supplementary exams July 2010
DISTRIBUTED DATABASES
Time: 3hours Max.Marks:60
ans any 5 ques.
All ques. carry equal marks
- - -
1. explain the features of Distributed Databases and Centralized Databases. provide
suitable examples for every kind.
2. discuss the different steps involved in the Design of Distributed Databases.
3. discuss how to transform Global Queries into Fragment Queries with examples.
4. a) elaborate the different kinds of Join Queries available in Distributed Databases?
Explain.
b) elaborate General Queries? discuss.
5. a) elaborate the features of Concurrency Control mechanism in Centralized
Databases?
b) Differentiate Concurrency in Centralized Database with Distributed Databases.
6. elaborate the different Locking protocols available in Distributed databases?
discuss with example.
7. a) discuss the role of Check points in Distributed databases.
b) What is meant by Reliability? discuss.
8. Write short notes on
a. Ingress Databases
b. IBM's intersystem communication
c. Multibase
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NR

Earning:   Approval pending.