Question

How does the data update process differ between operational databases and data warehouses?

a.

Operational databases use historical data, while data warehouses use real-time data.

b.

Operational databases update data after every transaction, while data warehouses do not update data in real time.

c.

Operational databases are nonvolatile, while data warehouses use volatile data.

d.

Operational databases and data warehouses update data in the same way.

Posted under Data Warehousing and OLAP

Answer: (b).Operational databases update data after every transaction, while data warehouses do not update data in real time. Explanation:Operational databases update data with every transaction, while data warehouses do not update data in real time.

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