Discussion
A subset of data in a data warehouse in the form of summary data, related to a particular department or business function :
Answer: C
The answer is Data Marts.
A data mart is a subset of the data warehouse, usually summarised, that serves one department or business function, such as sales or finance. It gives those users faster and simpler access to the data they need.
Metadata is data about the warehouse's data, archive data is old data kept for the record, and an operational data store holds current, detailed operational data rather than departmental summaries.
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