Match the following sentences to the whether they apply to the concepts of drilling-down, rolling-up, or drilling-across. Some of the concepts will have more than one match.

1.Take an analysis one step deeper into details.

2.Join two fact tables via common dimensions.

3.The data is requeried to an enclosing hierarchy.

4.Narrows a BI query along one dimension.

5.Conformed dimensions are critical for ensuring valid analysis.

a. Roll-up

b. Drill-across

c. Drill-down