Which of the Following Is a Reason That Data Warehouses

Multiple Choice

Which of the following is a reason that data warehouses are created and maintained separately from operational databases?

A) The data is used in different ways that requires it to be physically separate.
B) No ERP system incorporates data warehousing capability.
C) Audit controls require that data for management analysis be kept separate from transaction data.
D) A separate centralized data warehouse is an effective means of collecting data from diverse sources.