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Question 65Asked in UGC NET Computer Science, August 2016 (Paper II & III, Selected Questions)

Which of the following statements is/are True regarding some advantages that an object-oriented DBMS (OODBMS) offers over a relational database?

Which of the following statements is/are True regarding some advantages that an object-oriented DBMS (OODBMS) offers over a relational database? I. An OODBMS avoids the "impedance mismatch" problem. II. An OODBMS avoids the "phantom" problem. III. An OODBMS provides higher performance concurrency control than most relational database. IV. An OODBMS provides faster access to individual data objects once they have been read from disk.
  1. AII and III only
  2. BI and IV only
  3. CI, II, and III only
  4. DI, III and IV only
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Correct answer: (B) I and IV only

Explanation

I. An OODBMS avoids the "impedance mismatch" problem: true. II. An OODBMS does not avoid the "phantom" problem. III. An OODBMS does not provide higher-performance concurrency control than most relational databases. IV. An OODBMS provides faster access to individual data objects once they have been read from disk: true. So I and IV only.

From UGC NET Computer Science PYQ, August 2016 (Paper II & III, Selected Questions)

This is question 65 of UGC NET Computer Science PYQ, August 2016 (Paper II & III, Selected Questions). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.