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In a data warehouse, data quality is achieved by:

A. cleansing.

B. restructuring.

C. source data credibility.

D. transformation.

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Answer Posted / guest

Answer: C

In a data warehouse system the quality of data depends on
the quality of the originating source. Choices A, B and D
relate to the composition of a data warehouse and do not
affect data quality. Restructuring, transformation and
cleansing all relate to reorganization of existing data
within the database.

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