Method for converting relational models to XML (extensive markup language)

Abstract

The invention provides a method for converting relational models to XML (extensive markup language), and relates to relational data definition structural models, XML mode definition, mapping rule dictionaries and mapping rule dictionary construction algorithms. Key problems in the aspect of structures between the relational models and the XML can be solved by the aid of the method, in other words,effective mapping can be defined, the method is mainly applied to converting the relational models in various fields to XML models, and flat two-dimensional structures can be mapped to nested hierarchical structures. Data structures in the relational models, data operation process sets, data integrity constraint information and relevant information of element declaration, attribute declaration, naming spaces and the like in the XML are defined by the aid of the method, a mapping rule dictionary is designed and is constructed by the aid of algorithms, and accordingly relational data can be converted to the XML. Compared with the traditional method, the method has the advantages that the conversion efficiency can be greatly improved, constraint information in relational modes can be completely kept to the greatest extent, and the traditional conversion processes can be optimized from the aspects of the conversion efficiency and the conversion quality.

Description

technical field [0001] The invention relates to the field of data interoperability, belongs to the integration of relational databases and XML, and in particular relates to a method for transforming relational models into XML. Background technique [0002] With the advent of the information age of the manufacturing industry, information sharing has become an important technology for the development of information technology, and the ways of storing data also need to be shared and integrated. XML is an Extensible Markup Language (Extensible Markup Language) developed by the W3C Association. Its structure nesting, self-description, format independence, and platform and application independence bring convenience to the field of data interoperability. It should be said that XML has well realized the exchange of data and information between different platforms and systems, and laid a solid foundation for promoting business exchanges among enterprises and entities. [0003] By st...

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Problems solved by technology

[0011] The purpose of the present invention is to improve the quality and efficiency of current relational mode to XML mode conversion, because the traditional conversion method can not realize the mapping between relational mode and XML mode well, cause semantic information to lose or be incomplete, and this conversion method tries hard It is possible to completely retain the information constraints in the original relational schema, reduce the loss of semantic information during the conversion process, and greatly improve the efficiency and quality of data conversion

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