Database Management System (DBMS) MCQs with answers Page - 31

Here, you will find a collection of MCQ questions on Database Management System (DBMS). Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. In mathematical term Table is referred as

  • (A) relation
  • (B) attribute
  • (C) tuple
  • (D) domain

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Q. In mathematical term Row is referred as

  • (A) relation
  • (B) attribute
  • (C) tuple
  • (D) domain

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Q. _______ allow us to identify uniquely a tuple in the relation.

  • (A) superkey
  • (B) domain
  • (C) attribute
  • (D) schema

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Q. Minimal Superkeys are called

  • (A) schema keys
  • (B) candidate keys
  • (C) domain keys
  • (D) attribute keys

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Q. Which of the following is not Modification of the Database

  • (A) deletion
  • (B) insertion
  • (C) sorting
  • (D) updating

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Q. Which of the following is Relation-algebra Operation

  • (A) select
  • (B) union
  • (C) rename
  • (D) all of the above

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Q. Which of the following in not Outer join?

  • (A) left outer join
  • (B) right outer join
  • (C) full outer join
  • (D) all of the above

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Q. Who proposed the relational model?

  • (A) bill gates
  • (B) e.f. codd
  • (C) herman hollerith
  • (D) charles babbage

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Q. Set of premitted values of each attribute is called

  • (A) domain
  • (B) tuple
  • (C) relation
  • (D) schema

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Q. Logical design of database is called

  • (A) database instance
  • (B) database snapshot
  • (C) database schema
  • (D) all of the above

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