Dataset search using reduced collation set

Details Dataset search using reduced collation set Dataset search using reduced collation set

2005-02-03

2009-11-10

Wong, Don (Department: 2163)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000

Reexamination Certificate

active

07617187

ABSTRACT:
A method of searching for objects in a second database using a query from a first database includes receiving a first query from the first database where the first query is generated using a collation associated with the first database or user session or explicitly specified by users, where the first database may be the same as the second database. The first query is rewritten to form a second query which includes a superset of the collation and a residue predicate which includes a predicate from the first query. An index plan is adopted which targets an index associated with the a multiple language collation expressed in the rewritten query. The rewritten query is executed accessing the index and corresponding data that align with the residue predicate. The total number of indexes provided can be much less than the number of indexes needed if all possible collations were individually indexed.

REFERENCES:
patent: 6134540 (2000-10-01), Carey et al.
patent: 6374253 (2002-04-01), Weider et al.
patent: 6584470 (2003-06-01), Veale
patent: 2005/0223022 (2005-10-01), Weissman et al.
patent: 2005/0251519 (2005-11-01), Davis
patent: 2006/0064432 (2006-03-01), Pettovello
Unicode Technical Standard #10, Unicode Collation Algorithm, http://www.unicode.org/reports/tr10, Dec. 23, 2004, 66 pages.

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