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Home Database Database Design Using Normalization Comments

  • Question
  • Normalization ________ data duplication.


  • Options
  • A. eliminates
  • B. reduces
  • C. increases
  • D. maximizes

  • Correct Answer
  • eliminates 


  • Database Design Using Normalization problems


    Search Results


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

    • Options
    • A. advantage
    • B. disadvantage
    • C. either an advantage or disadvantage
    • D. neither an advantage nor disadvantage
    • Discuss
    • 2. Each answer below shows example data from a table. Which answer is an example of the inconsistent values problem?

    • Options
    • A. Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row.
    • B. Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column.
    • C. Three rows have the values Brown, NULL, and Blue in the same column.
    • D. One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column.
    • Discuss
    • 3. Read-only databases are ________ updated.

    • Options
    • A. always
    • B. commonly
    • C. seldom
    • D. never
    • Discuss
    • 4. Which of the following is the original purpose of SQL?

    • Options
    • A. To specify the syntax and semantics of SQL data definition language
    • B. To specify the syntax and semantics of SQL manipulation language
    • C. To define the data structures
    • D. All of the above.
    • Discuss
    • 5. The SQL statement that queries or reads data from a table is ________ .

    • Options
    • A. SELECT
    • B. READ
    • C. QUERY
    • D. None of the above is correct.
    • Discuss
    • 6. When assessing the table structure of an acquired set of tables with data, determining primary keys is (part of) the:

    • Options
    • A. first step.
    • B. second step.
    • C. third step.
    • D. fourth step.
    • Discuss
    • 7. Each answer below shows example data from a table. Which answer is an example of the general-purpose remarks column problem?

    • Options
    • A. Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row.
    • B. Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column.
    • C. Three rows have the values Brown, NULL, and Blue in the same column.
    • D. One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column.
    • Discuss
    • 8. Multivalued dependencies should ________ be eliminated.

    • Options
    • A. always
    • B. commonly
    • C. seldom
    • D. never
    • Discuss
    • 9. 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:

    • Options
    • A. first step.
    • B. second step.
    • C. third step.
    • D. fourth step.
    • Discuss
    • 10. When assessing the table structure of an acquired set of tables with data, determining foreign keys is (part of) the:

    • Options
    • A. first step.
    • B. second step.
    • C. third step.
    • D. fourth step.
    • Discuss


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