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US 2007/0168329 A1Published application
Database query system using a statistical model of the database for an approximate query response
OwnerMichael Haft, Reimar Hofmanninventors
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Abstract
The invention relates to a data base query system which is characterized in that once the database query is drawn up, a compressed image of the database to be queried is queried in accordance with the database query. Depending on the result of the query of the compressed image an inspection is made whether the result is sufficient and if the result is not sufficient, the database itself is queried in accordance with the database query.
Claims12
A database query system, having
- at least one first device that has stored a database, the database containing a multiplicity of data,
- at least one second device that stores a compressed image of at least one portion of the contents of the database, and
- a query unit that is coupled to the first device and to the second device and is set up in such a way that it can carry out querying of the contents of the compressed image and querying of the contents of the database.
A method for computer-aided querying of a database that contains a multiplicity of data,
- in which a database query is formed,
- in which the compressed image of the database is queried in accordance with the database query,
- in which it is checked independently of the result of the query of the compressed image whether the result is sufficient,
- in which the database is queried in accordance with the database query or in accordance with another database query in the case when the result is not sufficient, and
- in which the result of the query of the compressed image and/or the result of the query of the database are/is provided.
2 more elements
Dependencies are inferred from the claim text.