When a query retrieves specific data from one or more tables, it is displayed as a portion of the total records available. The portion is called a _________.

Which choice is not a proper method of managing keys?

A. Memory locations of keys should be overwritten seven times. B. Keys may be sent to and reused by a different department. C. Keys frequently in use should be replaced frequently. D. Key expiration dates should be carefully monitored.

A(n) ____________________ graphic consists of closely spaced rows of pixels.

Fill in the blank(s) with the appropriate word(s).