THE DATABASE ENVIRONMENT QUIZ

Databases that contain historical and summarized information are usually called data warehouses.

True

False

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A data warehouse uses:

partial operational data.

historical operational data.

health care data.

future operational data.

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A shared database should:

be accurate and available.

provide for backup and recovery.

All of these

be secure.

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Which of the following is true for a relational database?

Data is represented by tables.

It is difficult to access data.

Complex programs have to be written for simple queries.

All of these

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Duplicate data often results in loss of data integrity because:

Both A &

the data formats may be inconsistent.

data values may not agree.

Neither A &

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Data descriptions are stored in a central location called the depository.

False

True

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

False

True

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Stored representations of objects and events that have meaning and importance in the user's environment are known as a database.

True

False

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

True

False

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Legacy data is which of the following?

Data contained in a newly-installed system

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 file system

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