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Z94.3 - Computer & Information Systems

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VALIDATION. (ANSI) Tests to determine whether an implemented system fulfills its requirements.

VARIABLE. (1) (ANSI) A quantity that can assume any of a given set of values. (2) (ANSI) In a conceptual schema language, a term that refers to unspecified, indeterminate entities in the universe of discourse.

VARIABLE-LENGTH RECORD. Pertaining to a file in which the records need not be uniform in length.

VECTOR. (1) (ANSI/ISO) A quantity usually characterized by an ordered set of scalars. (2) (ANSI) Contrast with scalar.

VERIFY. (1) (ANSI) To determine whether a transcription of data or other operation has been accomplished accurately. (2) (ANSI) To check the results of data entry.

VIRTUAL STORAGE. (ANSI/ISO) The storage space that may be regarded as addressable main storage by the user of a computer system in which virtual addresses are mapped into real addresses. The size of virtual storage is limited by the addressing scheme of the computer system and by the amount of auxiliary storage available, and not by the actual number of main storage locations.

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