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Data Warehousing

Data Warehousing
Most operational systems are based on the use of transient data.

False
True

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Data Warehousing
Star schema is suited to online transaction processing, and therefore is generally used in operational systems, operational data stores, or an EDW.

True
False

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Data Warehousing
Periodic data are data that are physically altered once added to the store.

True
False

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Data Warehousing
A data warehouse is which of the following?

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

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

False
True

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

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

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