Starts the MS-DOS QBasic programming environment.

See Quality of Service.

A set of metrics used to measure the quality of transmission and service availability of any given transmission system.

Abbreviated QIC. A set of tape standards defined by the Quarter-Inch Cartridge Drive Standards Association, a trade association established in 1987.

A request sent to SQL Server to manipulate or retrieve data. Queries can have many formats, but the most common are known as SELECT queries.

An interactive SQL interface for Windows, this utility allows you to run all the same commands that the OSQL command-line utility does. It has an added advantage of being a Windows interface. This allows you to run multiple queries and view the results of such queries in their own separate windows.

In SQL Server, a mechanism that determines which index (or no index) will result in the lowest amount of logical I/O. This is done by evaluating the data and the restrictions that the query is requesting. With this information, the query optimizer estimates how many pages will be read for each possible scenario and chooses the scenario with the lowest estimated page I/O.

Broadly, any list of elements arranged in an orderly fashion and ready for processing, such as a line of people waiting to enter a movie theater. In routing, it refers to a backlog of information packets waiting in line to be transmitted over a router interface.