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Data Warehousing

Data Warehousing
Data scrubbing can help upgrade data quality; it is not a long-term solution to the data quality problem.

True
False

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Data Warehousing
Derived data are detailed, current data intended to be the single, authoritative source for all decision support applications.

True
False

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Data Warehousing
A data warehouse is which of the following?

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

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Data Warehousing
The role of the ETL process is to identify erroneous data and to fix them.

False
True

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Data Warehousing
Joining is the process of partitioning data according to predefined criteria.

False
True

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Data Warehousing
A multifield transformation does which of the following?

All of these
Converts data from one field into multiple fields
Converts data from multiple fields into multiple fields
Converts data from multiple fields into one field

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