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Database Design Using Normalization MCQ Questions and Answers

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In this section we provide lots of objective question of Database Design Using Normalization in Database Management System.

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1) Needing to using more complicated SQL in database applications is a(n) ________ of normalization.

    advantage
    disadvantage
    either an advantage or disadvantage
    neither an advantage nor disadvantage

Answer : B Discuss

2) Eliminating modification anomalies is a(n) ________ of normalization.

    advantage
    disadvantage
    either an advantage or disadvantage
    neither an advantage nor disadvantage

Answer : A Discuss

3) Multivalued dependencies should ________ be eliminated.

    always
    commonly
    seldom
    never

Answer : A Discuss

4) When assessing the table structure of an acquired set of tables with data, accessing the validity of possible referential integrity constraints on foreign keys is (part of) the:

    first step.
    second step.
    third step.
    fourth step.

Answer : C Discuss

5) Using the SQL GROUP BY phrase with a SELECT statement can help detect which of the following problems?

    The multivalue, multicolumn problem
    The inconsistent values problem
    The missing values problem
    The general-purpose remarks column problem

Answer : B Discuss

6) When assessing the table structure of an acquired set of tables with data, determining foreign keys is (part of) the:

    first step.
    second step.
    third step.
    fourth step.

Answer : B Discuss

7) Creating a read-only database is a task that is ________ assigned to beginning database professionals.

    always
    commonly
    seldom
    never

Answer : B Discuss

8) Each answer below shows example data from a table. Which answer is an example of the general-purpose remarks column problem?

    Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row.
    Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column.
    Three rows have the values Brown, NULL, and Blue in the same column.
    One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column.

Answer : D Discuss

9) For a number of reasons, normalizations is not often an advantage for a(n) ________ database.

    read-only
    updateable
    either a read-only or an updateable
    None of the above is correct.

Answer : A Discuss

10) Most of the time, modification anomalies are serious enough that tables should be normalized into:

    1NF.
    2NF.
    3NF.
    BCNF.

Answer : D Discuss

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