Boots – shoes – and leggings
Patent
1993-12-08
1996-06-25
Beausoliel, Jr., Robert W.
Boots, shoes, and leggings
395600, 39518213, 3642821, 3642823, 3642834, G01R 3128
Patent
active
055308007
ABSTRACT:
A system for recovery of relations in a data base in case of errors, comprises functionality executed by a computer and ensuring that data in the data base are structured as items of data in a number of recovery sub-systems, each item of data belonging to only one sub-system. If a sub-system contains one or more items of data that depend on one or more items of data in another sub-system, the first mentioned sub-system is marked as depending on the second mentioned sub-system. If a first sub-system is marked as depending on a second sub-system which is marked as depending on a third sub-system, the first sub-system is recursively marked as depending on the third sub-system. Furthermore no two sub-systems are marked as depending on each other. Integrity constraints between an item of data in one sub-system and an item of data in another sub-system are admitted provided that one of these sub-systems is marked as depending on the other one. Recovery actions are performed on a sub-system so as to only result in changing items of data of that sub-system and of sub-systems marked as depending on it.
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Larsson Bo E. S.
Sanchez Ivan M.
Sintorn Hed J.
Beausoliel, Jr. Robert W.
Le Dieu-Minh
Telefonaktiebolaget LM Ericsson
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