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Q1. Describe the concepts of Horizontal Fragmentation and Vertical Fragmentation.

Q2. Why do we need a two-level recovery method for multi-database transactions? In brief describe the two phases of two-phase commit protocol.

Q3. Compare and contrast the given:

  • Commit and Roll-back.
  • Redo and Undo.

Q4. prepare brief notes on any three of the given:

a) Categories of Data models.

b) By using Heuristics in the Query optimization.

c) Distributed Databases.

d) Web Databases.

DBMS, Programming

  • Category:- DBMS
  • Reference No.:- M910675

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