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2003 Course Advanced Databases (Elective I)

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Total No. of Questions : 12] [Total No. of Pages : 4 [3864] - 406 P 1102 B.E. (Computer Engg.) ADVANCED DATABASES (2003 Course) (Elective - I) (410445) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answers to the two sections should be written in separate books. 2) Neat diagrams must be drawn wherever necessary. 3) Assume suitable data, if necessary. 4) Section I : Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6. 5) Section II : Q.7 or Q.8, Q.9 or Q.10, Q.11 or Q.12. SECTION - I Q1) a) b) c) Explain Parallel Hash Join with suitable example. Explain design issues in Parallel Database System. Explain any two Parallel Database Architectures. [5] [6] [6] OR Q2) a) b) Q3) a) b) c) Evaluate how well partitioning techniques support the following types of data access [9] i) Scanning the entire relation. ii) Locating tuple associatively. iii) Locating all tuples such that the value of given attribute lies within a specified range. Write a short note on [8] i) Cash Coherency Protocol. ii) Parallel Query Optimization. If we are to ensure atomicity, all the sites in which a transaction T executed must agree on the final outcome of the execution T must either commit at all sites, or it must abort at all sites. Describe the technique or protocol used to ensure this property in detail. [7] Write a short note on Persistent Messaging in Distributed Transaction Processing. [5] Explain Heterogeneous distributed databases. [5] OR P.T.O.

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