THE DATABASE ENVIRONMENT QUIZ

The source of the data is sometimes called the system of record.

False

True

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Legacy data is which of the following?

Data contained by a system used prior to the installation of a new system

Data rejected during the installation of a new system

Data contained in a newly-installed system

Data contained in a file system

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A data warehouse uses:

future operational data.

health care data.

historical operational data.

partial operational data.

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Data quality problems currently cost U.S. businesses some $60 million each year (Hudica, 2003).

True

False

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Duplicate data often results in loss of data integrity because:

data values may not agree.

the data formats may be inconsistent.

Neither A &

Both A &

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The primary mechanism for providing context for data is metadata.

False

True

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Some advantages of the database approach include all, but:

improved data consistency.

minimal data redundancy.

improved data sharing.

program-data dependency.

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An advantage of the database approach is the creation of maximum data redundancy.

False

True

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Stand-alone databases exhibit many of the same advantages common to file processing systems.

True

False

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The database approach requires additional costs and risks.

False

True

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