Efficient collation element structure for handling large...

Details Efficient collation element structure for handling large... Efficient collation element structure for handling large...

2005-04-05

2005-04-05

Robinson, Greta (Department: 2167)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000, C704S008000

Reexamination Certificate

active

06877003

ABSTRACT:
One embodiment of the present invention provides a system for facilitating use of a collation element that supports a large number of characters. The system operates by receiving the collation element and reading a primary weight value from a primary weight field within the collation element. If the primary weight value falls within a reserved set of values, the system reads an additional portion of the primary weight value from both a secondary weight field and a tertiary weight field within the collation element. On the other hand, if the primary weight value is not within the reserved set of values, the system reads a secondary weight value from the secondary weight field, and also reads a tertiary weight value from the tertiary weight field.

REFERENCES:
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Davis M: “ICU Collation Design Documentation”, Internet Publication, May 31, 2000, XP002249274, Retrieved from the Internet: URL:http://oss.software,ibm.com/cvs/1cu/{checkout}/icuhtm1/design/collation/ICU_collation_design.htm?rev=1,11&content-type=text/plain retrieved on Jul. 25, 2003, section 2, paragraphs 1-2, section 5.1, subsection “special CEs”, paragraph 1.
Ho C et al: “Multilingual Collation and CJK Sorts in Oracle 9i” Proceedings of 18thInternational Unicode Conference, Online Apr. 24-27, 2001, XP002249275, Hong Kong, Retrieved from the Internet: URL:http://www.unicode.org/iuc/iuc18/papers.htm1,retrieved on Jul. 25, 2003, cited in the application p. 21.
Davis, Mark et al: “Unicode Technical Standard #10, Unicode Collation Algorithm”, Unicode Technical Report, Online, Mar. 23, 2001, XP002249276, Retrieved from the Internet: URL:http://www.unicode.org/reports/tr10/tr10-8.htm1, retrieved on Jul. 25, 2003, cited in the application, section 6.2, 6.3.2, 6.3.3, 6.11.1, and section 7.1, paragraph 1-3.

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