Nonvolatile in the context of a data warehouse means _____. a. the data can only be changed if it is also modified in the system where it was originally calculated b. the data can't be changed while reports

Nonvolatile in the context of a data warehouse means _____.

a. the data can only be changed if it is also modified in the system where it was originally calculated
b. the data can't be changed while reports are running
c. the data cannot be changed or updated by users of the data warehouse
d. the data mart must be used when modifying information

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