Download GTU BE/B.Tech 2019 Summer 7th Sem New 2170714 Distributed Dbms Question Paper

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Subject Code:2170714
GUJARAT TECHNOLOGICAL UNIVERSITY

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BE - SEMESTER-VII(NEW) EXAMINATION — SUMMER 2019
Subject Name:Distributed DBMS
Time:02:30 PM TO 05:00 PM
Instructions:
1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1
(a) Explain following in context of Relational algebra:

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1. Selection 2. Join 3. Projection (03)
(b) Discuss views in centralized DBMS. (04)
(c) Define transparency. Explain the layers of transparencies in distributed database design in brief. (07)

Q.2

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(a) List down and explain any one condition that leads to a deadlock. (03)
(b) Explain dependency structures with example. (04)
(c) Describe Bond Energy Algorithm (BEA) algorithm in vertical fragmentation. (07)

OR

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(c) Draw and explain query processing in centralized system. (07)
(a) Define Minterm selectivity and access frequency. (03)
(b) Discuss MDBS architecture with a global conceptual schema. (04)

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Q.3
(a) What is authorization control? How to imply authorization control in centralized and distributed environment. (07)

OR

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(a) Define Autonomy, Distribution and Heterogeneity. (03)
(b) Explain search strategy in Query Optimization. (04)
(c) Describe Two Phase Locking Protocol and Discuss Centralized Two phase locking protocol in brief. (07)

Q.4

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(a) Write down reasons for fragmentation. (03)
(b) List down type of transactions and explain any one in details. (04)
(c) Explain query decomposition and data localization layer for distributed query processing-system. (07)

OR

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(a) Write down objectives of query processing. (03)
(b) Discuss information requirements during allocation? (04)
(c) Explain two-phase commit protocol. (07)

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Q.5
(a) Explain Write-ahead logging Protocol. (03)
(b) Explain conflict serializability by giving example. (04)
(c) Discuss join ordering in query optimization. (07)

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OR

(a) Explain different types of failures in DDBMS. (03)
(b) Explain in basic timestamp-based protocol. (04)
(c) Write a short note on Shadow Paging. (07)

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Date:21/05/2019
Total Marks: 70