(SPS). An offline backup power supply system which automatically switches on in case of power failure.

Standby Power System. An offline backup power supply system which automatically switches on in case of power failure.

(spt). Disk storage is organized in sectors, which are pie-shaped slices, and tracks, which are concentric rings. A combination of two or more sectors on a single track makes a cluster or block, the minimum unit used to store information. The number of sectors per track determines the size of each cluster. The number of clusters on a disk's surface determines the storage capacity of the disk. The number of sectors per track is also related to the speed at which a disk is read and the pattern of sector mapping.

Sectors Per Track. Disk storage is organized in sectors, which are pie-shaped slices, and tracks, which are concentric rings. A combination of two or more sectors on a single track makes a cluster or block, the minimum unit used to store information. The number of sectors per track determines the size of each cluster. The number of clusters on a disk's surface determines the storage capacity of the disk. The number of sectors per track is also related to the speed at which a disk is read and the pattern of sector mapping.

SQL (pronounced SQL or Sequel). A language used to create, maintain, and query relational databases. It is an ISO and ANSI standard. SQL uses regular English words for many of its commands, which makes it easy to use. It is often embedded within other programming languages.

Structured Query Language (pronounced SQL or Sequel). A language used to create, maintain, and query relational databases. It is an ISO and ANSI standard. SQL uses regular English words for many of its commands, which makes it easy to use. It is often embedded within other programming languages.

Structured Query Language Module Language. An ANSI standard programming language which can be used to interface other programming languages with SQL database management systems.

Structured Query Language Server. A client/server relational database management system from Sybase, Inc. for Windows NT, OS/2, UNIX, VAX, and NetWare servers.

Magnetic tape in rectangular cartridges instead of on round reels. Quarter-inch cartridges for personal computers and magnetic tape cartridges for mainframe computers are both in this format.

SVHS (Super Video Home System). A high-quality video format that has higher resolution than normal VHS. It must be played on a videocassette recorder that supports the SVHS format, and to see the sharper image resulting from the higher resolution, it must be played on a high-resolution television set.