In a binary search tree, if a node has two children, then how many key values does the node itself contain?

The __________ clause can be used to match columns with the same name, but different data types.

A) NATURAL JOIN B) USING C) CROSS JOIN D) OUTER JOIN

What type of algorithm is list indexing an example of?

A. constant-time B. logarithmic-time C. exponential-time D. linear-time