Data Warehousing
Data transformation includes which of the following?

A process to change data from a summary level to a detailed level
Separating data from one source into various sources of data
Joining data from one source into various sources of data
A process to change data from a detailed level to a summary level

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Data Warehousing
The extract process is which of the following?

Capturing all of the data contained in various operational systems
Capturing a subset of the data contained in various decision support systems
Capturing all of the data contained in various decision support systems
Capturing a subset of the data contained in various operational systems

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Data Warehousing
An operational system is which of the following?

A system that is used to run the business in real time and is based on historical data.
A system that is used to support decision making and is based on current data.
A system that is used to run the business in real time and is based on current data.
A system that is used to support decision making and is based on historical data.

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