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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

Inactive Publication Date: 2009-01-21
西安中电商务信息技术有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0005] The present invention provides an XML data XPath query method based on the SQL structured query language to solve the problems of poor versatility and incompatibility between the two languages ​​in the prior art

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  • XML data XPath search method based on SQL structured search language

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Embodiment Construction

[0013] The present invention provides an XML data XPath query method based on the SQL structured query language, aiming at solving the inconsistency of query standards existing in the prior art. To query XML data, it is necessary to first obtain an XML document, and then use XPath to perform a query. , which makes the user's development work more complicated and requires an in-depth understanding of XML and XPath technologies.

[0014] The implementation example of the present invention is realized like this, a kind of XML data XPath query method based on SQL structured query language, described method comprises the following steps:

[0015] The absolute path or mapping location of the XML data document provided by the user for query;

[0016] Analyze the security and integrity of XML data files provided by users;

[0017] When the analysis is completed, if there is no problem, return the current operation library table name to the user;

[0018] The user enters the query SQ...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 王建波江涛王鹤
Owner 西安中电商务信息技术有限公司
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