Boots – shoes – and leggings
Patent
1993-02-05
1996-01-16
Kulik, Paul V.
Boots, shoes, and leggings
395726, 364DIG1, 3642821, 3642466, 3642468, G06F 1730
Patent
active
054856078
ABSTRACT:
The concurrency-control mechanisms in a database-management system achieves high concurrency by using a lock-mode set larger than that conventionally employed for multi-granularity locking. In a system of key-valued locking in which locks on key-value ranges are acquired separately from the locks on the key values with which they are associated, the IX lock mode conventionally acquired on a range by update, insert, and delete operations is replaced with three separate lock modes respectively associated with those operations and invoked by them for range locking. In key-valued-locking systems in which ranges are locked commonly with the key-values associated with them, the mode set is further expanded so that each mode represents a different combination of range and key-value locks.
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Green Russell J.
Lomet David B.
Digital Equipment Corporation
Kozik Kenneth F.
Kulik Paul V.
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