To address the problems associated with multiple data management systems, the Kayak Health Plan has begun to use a data warehouse. One likely characteristic of Kayak's data warehouse is that:
A.
It requires Kayak's individual databases to store large amounts of data that are not needed for daily operations.
B.
It contains data from internal sources only.
C.
It stores historical data rather than current data.
D.
The data in the warehouse are linked by a common subject.
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