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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: 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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