System and method for providing hot spare redundancy and recovery for a very large database management system
CA 2263034 A1 · Owner: Silberschatz, Abraham · Inventors: Silberschatz, Abraham; Rastogi, Rajeev
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
For use with a primary database residing on a primary computer, the primary computer being couplable to a secondary computer having a secondary database a system, for, and method of, allowing the secondary computer to operate as a hot spare for the primary computer and a database management system employing the system or the method. In one embodiment, the system includes: (1) a transaction logger, associated with the primary database that maintains log records of transactions involving persistent data in the primary database (2) a transaction, processor, associated with the primary database that, transmits at least a portion of the log records to the secondary computer to allow the …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed February 26, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 26, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2021.
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Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.