Data base locking
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 6, 1987
Issued Date -
N/A
app pub date -
Apr 29, 1986
filing date -
Nov 15, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A data base system is disclosed in which records are locked out during record changing by using a dynamically generated directed acyclic graph of the records. The edges of the graph, stored in the records themselves, point toward a 'root' record representing multiply-shared information. An application to the assignment of telephone facilities to telephone subscribers is also described. A transaction list is maintained to identify locked out records previously locked out during the same transaction.
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Family
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Cited Art Landscape
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