| 从SCHEMA到关系的映射 |
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| 引用本文： | 阳王东,沙莎.从SCHEMA到关系的映射[J].计算机工程与应用,2005,41(36):179-182. |
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| 作者姓名： | 阳王东 沙莎 |
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| 作者单位： | 中南大学信息科学与工程学院,长沙,410075;中南大学信息科学与工程学院,长沙,410075 |
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| 摘 要： | 文章对SCHEMA描述的XML文档的数据模型进行了集合分析,并在其描述的集合上定义了关联依赖关系、值依赖关系和两种取值关系,根据这些关系及SCHEMA规范所规定的约束,建立了一组从SCHEMA到关系型数据库的映射规则,并且证明由此规则得到的映射是完备的,而且映射后的关系符合第三范式。文章最后提出了可进一步研究的问题和方向。
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| 关 键 词： | 模式 映射 关系型数据库 依赖关系 约束 |
| 文章编号： | 1002-8331-（2005）36-0179-04 |
| 收稿时间： | 2005-03 |
| 修稿时间： | 2005-03 |
Mapping Schema to Relations |
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| Yang Wangdong,Sha Sha.Mapping Schema to Relations[J].Computer Engineering and Applications,2005,41(36):179-182. |
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| Authors: | Yang Wangdong Sha Sha |
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| Affiliation: | School of Information Science and Engineering,Central South University,Changsha 410075 |
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| Abstract: | In this paper,data model of the XML documents is parsed in set.The association dependence,value dependence and two kinds relation of assignment based on the set are defined.Rules mapped from Schema to relational database are proposed by introducing the constraints which based on those relations and Schema specifications.Furthermore,this paper proves that the mapping is complete and those relations mapped from Schema are all in Third Normal Form(3NF).Finally,the problems and the challenges of the future research is given. |
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| Keywords: | schema map relational database relation of dependence constraint |
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