Index sampled tablescan
CA 2363187 A1 · Owner: Finlay, Ian R. · Inventors: Zuzarte, Calisto P.; Finlay, Ian R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optimized query processing system and method for a database system. The database system includes a table of data and an index correlated to both the query, and to the table. The optimized query processing system includes an index accessing, module adapted to access the index to determine if the table contains an entry satisfying, a query predicate; and a tablescan module for scanning substantially the entire table and, retrieving data satisfying the query. A method is also disclosed for generating database, diagnostic data.
Read the whole patent
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 November 19, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 19, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.