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Data Warehousing

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

False
True

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Data Warehousing
Every key used to join the fact table with a dimensional table should be a surrogate key.

False
True

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Data Warehousing
Data in operational systems are typically fragmented and inconsistent.

False
True

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Data Warehousing
A data warehouse is which of the following?

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

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

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

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

True
False

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