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Data Warehousing

Data Warehousing
Both status data and event data can be stored in a database.

False
True

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Data Warehousing
Derived data are detailed, current data intended to be the single, authoritative source for all decision support applications.

True
False

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Data Warehousing
Data scrubbing can help upgrade data quality; it is not a long-term solution to the data quality problem.

True
False

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Data Warehousing
A data warehouse is which of the following?

Contains only current data.
Organized around important subject areas.
Can be updated by end users.
Contains numerous naming conventions and formats.

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Data Warehousing
A data mart is designed to optimize the performance for well-defined and predicable uses.

False
True

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Data Warehousing
A star schema has what type of relationship between a dimension and fact table?

One-to-one
All of these
One-to-many
Many-to-many

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