Method of imposing multi-object constraints on data files in a d

Details Method of imposing multi-object constraints on data files in a d Method of imposing multi-object constraints on data files in a d

1994-05-17

1995-04-18

Kriess, Kevin A.

Boots, shoes, and leggings

36422281, 36422282, 3642821, 3642834, 364DIG1, G06F 1540, G06F 700

Patent

active

054086574

ABSTRACT:
A method, in a data processing system, of imposing constraints on data files which are changed by update statements, includes the steps of: a) identifying a particular object of the update O.sub.x and a particular attribute being updated; b) finding an applicable constraint based on the particular attribute being updated; c) converting the particular update object O.sub.x to at least one other object which is in the applicable constraint and is different than the update object O.sub.x ; and, d) generating an error message, if after the update, the applicable constraint is not satisfied by any object from the converting step.

REFERENCES:
patent: 5133068 (1992-07-01), Crus et al.
patent: 5226158 (1993-07-01), Horn et al.

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