Using query expression signatures in view matching

Details Using query expression signatures in view matching Using query expression signatures in view matching

2005-03-31

2009-10-06

Alam, Shahid A (Department: 2167)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000

Reexamination Certificate

active

07599925

ABSTRACT:
A system for optimizing queries against a database is described. The system comprises a memo structure that encodes a plurality of query expressions. The system also includes a signature mechanism that enables an assignment of the query expressions into equivalence classes. Methods of using such a system are additionally provided.

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patent: 2001/0013030 (2001-08-01), Colby et al.
patent: 2004/0006574 (2004-01-01), Witkowski et al.

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