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Data Warehousing

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
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
Data in operational systems are typically fragmented and inconsistent.

False
True

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Data Warehousing
Fact tables are which of the following?

Partially denoralized
Partially normalized
Completely normalized
Completely denoralized

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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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Data Warehousing
The @active data warehouse architecture includes which of the following?

Near real-time updates
Data that can extracted from numerous internal and external sources
All of these
At least one data mart

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