XML data XPath search method based on SQL structured search language

A structured query, XML database technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of poor versatility and incompatibility between two languages
CN101350028AInactive Publication Date: 2009-01-21西安中电商务信息技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
西安中电商务信息技术有限公司
Publication Date
2009-01-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an XML data base XPath query method on the basis of SQL structured quary language. The method comprises: firstly, analyzing and processing SQL sentences, then, transforming the SQL sentences into XPath sentences, and executing XPath sentence query. The method realizes the conversion between two query languages which are not communicated originally and allows using SQL language when XML data bases and XML data files are inquired. The method realizes a novel and practical method for inquiring the XML data bases and the XML data files.
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Description

technical field

[0001] The present invention designs a kind of XML data XPath query method based on SQL structured query language, especially a kind of query language SQL (Structural Query Language, relational data query standard) is converted into extensible markup language in any XML database and XML data file The invention relates to an XPath method for path query, which belongs to the technical field of database and information system. Background technique

[0002] Although the relational database is already a very mature application, the field-based approach can provide precise data definition and control, but the disadvantage is that its data structure is relatively fixed. Once the data structure needs to be expanded, it must be realized by modifying the database table structure, and the scope of modification may involve the relationship with other tables and all the data in the data table. XML, on the other hand, uses a hierarchical tree structure as its storage arch...

Claims

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