backup domain controller
(bdc) a server in a network of microsoft windows computers that maintains a copy of the sam database and handles access requests that the primary domain controller (pdc) doesn’t respond to. there may be zero or more bdcs in a network. they increase reliability and reduce load on the pdc.
- Backup light
a light at the rear of a motor vehicle that lights as a warning to those behind.
- Backup software
backup software tool, software software for doing a backup, often included as part of the operating system. backup software should provide ways to specify what files get backed up and to where. it may include its own scheduling function to automate the procedure or, preferably, work with generic scheduling facilities. it may include facilities for […]
- Backup rotation
backup rotation operating system any system for re-using backup media, e.g. magnetic tape. one extreme would be to use the same media for every backup (e.g. copy disk a to disk b), the other extreme would be to use new media every time. the trade-off is between the cost of buying and storing media and […]
- Backus-naur form
backus-naur form language, grammar (bnf, originally “backus normal form”) a formal metasyntax used to express context-free grammars. backus normal form was renamed backus-naur form at the suggestion of donald knuth. bnf is one of the most commonly used metasyntactic notations for specifying the syntax of programming languages, command sets, and the like. it is widely […]
- Backward analysis
backward -n-lysis theory an -n-lysis to determine properties of the inputs of a program from properties or context of the outputs. e.g. if the output of this function is needed then this argument is needed. compare forward -n-lysis. (1997-11-23)