The most common type of input device for the PC is a keyboard. 

Declare the variable and initialize it with a rectangular integer array that has three rows and three columns. Assume that constant ARRAY_SIZE has been declared to be 3.

What will be an ideal response?

Discuss the difference between each of the following types of indexes:

(a) Dense versus sparse indexes. (b) Primary versus secondary indexes. (c) Clustered versus unclustered indexes.