When we consider data in the data warehouse to be time-variant,we mean:
A) that the time of storage varies.
B) data in the warehouse contain a time dimension so that they may be used to study trends and changes.
C) that there is a time delay between when data are posted and when we report on the data.
D) none of the above.

Question

Quizplus · Accepted Answer

When we say that data in the data warehouse are time-variant, we mean that they contain a time dimension. This allows us to analyze and study trends and changes over time. It is not related to the time of storage or time delay between posting and reporting on the data.

When We Consider Data in the Data Warehouse to Be