Quiz Discussion

An-owner-member set in the CODASYL specifications may have

Course Name: SQL -Structured Query Language

  • 1]

    only one owner but many owner occurrences

  • 2]

    only one member but many member occurrences

  • 3]

    more than one member but only one occurrence per member

  • 4]

    All of the above

Solution
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# Quiz
1
Discuss

A snowflake schema is which of the following types of tables?

  • 1]

    Fact

  • 2]

    Dimension

  • 3]

    Helper

  • 4]

    All of the above

Solution
2
Discuss

A goal of data mining includes which of the following?

  • 1]

    To explain some observed event or condition

  • 2]

    To confirm that data exists

  • 3]

    To analyze data for expected relationships

  • 4]

    To create a new data warehouse

Solution
3
Discuss

Fact tables are which of the following?

  • 1]

    Completely demoralized

  • 2]

    Completely normalized

  • 3]

    Partially demoralized

  • 4]

    Partially normalized

Solution
4
Discuss

Which of the following hardware components is the most important to the operation of a database management system?

  • 1]

    high-resolution video display

  • 2]

    printer

  • 3]

    high speed, large-capacity disk

  • 4]

    plotter

Solution
5
Discuss

Primitive operations common to all record management systems include

  • 1]

    Print

  • 2]

    Sort

  • 3]

    Look-up

  • 4]

    All of the above

Solution
6
Discuss

After you ______ a record, many data management environments require you to issue a command to save the changes you made

  • 1]

    Delete

  • 2]

    Update

  • 3]

    Sort key

  • 4]

    Index

Solution
7
Discuss

Each of the data files has a ______ that describe the way the data is stored in the file

  • 1]

    File structure

  • 2]

    Records

  • 3]

    Database

  • 4]

    Fields

Solution
8
Discuss

Sort/report generators

  • 1]

    are faster than index/report generators

  • 2]

    require more disk space than index/report generators

  • 3]

    do not need to sort before generating a report

  • 4]

    both (a) and (b)

Solution
# Quiz