Database Concepts Book Back Questions

12th Standard EM

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Computer Science

Time : 00:45:00 Hrs
Total Marks : 30
    5 x 1 = 5
  1. What is the acronym of DBMS?

    (a)

    DataBase Management Symbol

    (b)

    Database Managing System

    (c)

    DataBase Management System

    (d)

    DataBasic Management System

  2. Who is called Father of Relational Database from the following?

    (a)

    Chris Date

    (b)

    Hugh Darween

    (c)

    Edgar Frank Codd

    (d)

    Edgar Frank Cadd

  3. What symbol is used for SELECT statement?

    (a)

    σ

    (b)

    Π

    (c)

    X

    (d)

    Ω

  4. A tuple is also known as

    (a)

    table

    (b)

    row

    (c)

    attribute

    (d)

    field

  5. Who developed ER model?

    (a)

    Chen

    (b)

    EF Codd

    (c)

    Chend

    (d)

    Chand

  6. 3 x 2 = 6
  7. What is data consistency?

  8. What is the difference between Hierarchical and Network data model?

  9. What is normalization?

  10. 3 x 3 = 9
  11. Explain Cartesian Product with a suitable example.

  12. Explain Object Model with example.

  13. Write a note on different types of DBMS users.

  14. 2 x 5 = 10
  15. Explain the different operators in Relational algebra with suitable examples.

  16. Explain the characteristics of DBMS.

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