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基于数据元的数据模型语义描述 被引量:10

Description of the semantic data model based on data elements
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摘要 由于缺少形式化的数据模型语义描述方法,数据映射主要依靠人工完成,其效率低、质量差.以标准数据元为语义基本元素,提出一种形式化的数据模型语义描述方法.通过对数据元附加应用约束条件,建立对数据模型中数据项的语义描述;以数据项为基本单元,通过附加关系表的应用场景约束条件,建立关系表的语义描述;提出基于XML的数据模型语义描述格式. For the lack of formal semantic description for data model, data model mapping is usually performed by human beings, with lower efficiency and poor quality. With standard data element as basic semantic element, a formal approach is presented to describe the semantics of data model. Adding application constraints of data item to data element, semantic description is defined for data item in data model. Adding application context constraints to relational table and assembling semantics of the data item, the semantics of relational table is defined. A structure based on XML is defined to record the semantics of data model.
出处 《大庆石油学院学报》 CAS 北大核心 2009年第3期100-103,共4页 Journal of Daqing Petroleum Institute
基金 国家高技术研究发展计划项目(2006AA09A102-15) 国家科技重大专项项目(2008ZX05023-05-05)
关键词 数据模型 语义描述 数据元 数据映射 data model semantic description data element data mapping
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参考文献4

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  • 4Wen Bilong,Zhang Li.Defining semantics for data element with semantic tree[C].ISISE2008(2008 International Symposium on Information Science and Engineering),2008:524-527.

二级参考文献19

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