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ISRO2011-21

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Which type of DBMS provides support for maintaining several versions of the same entity?

  1. Relational Database Management System
  2. Hierarchical
  3. Object Oriented Database Management System
  4. Network
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Answer: Object Oriented Data Base Management Systems

Explanation: Some Object Oriented Systems provide support for maintaining several versions of the same object. An old version of an object that represents a tested and verified design should be retained until the new version is tested and verified.

Reference: Fundamentals of Database Systems - Page 726 - Ramez Elmasri - 2008

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