Unlike data in databases, data in data warehouses is:

1. function oriented.

2. raw transaction data.

3. collected from a single source.

4. used for analytical purposes.

What is required to make a recursive method successful?

1. special cases that handle the simplest computations directly

2. a recursive call to simplify the computation

3. a mutual recursion

A. 1

B. 2

C. 1 and 2

D. 1, 2, and 3