Efficient query processing of XML data using XML index
US7398265B2 · kind B2 · utility
18Cited by
48References
42Claims
0Family size
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Key dates
| Filing date | Sep 16, 2004 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | Jan 2, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99945
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus is provided for translating queries, such as path expressions and SQL/XML constructs, into SQL statements to be executed against an XML index, which improves processor time as opposed to applying path expressions directly to the original XML documents to extract the desired information. Simple path expressions, filter expressions, descendant axes, wildcards, logical expressions, relational expressions, literals, and other path expressions are all translated into SQL for efficient querying of an XML index. Similarly, rules for translating SQL/XML constructs into SQL are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.