Data Warehousing
Data transformation includes which of the following?

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

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Data Warehousing
The extract process is which of the following?

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

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