摘要： 对于 XML 模式和 DTD 规范化设计,现在开展的研究不多,而且才刚起步。W. Provost 提出将关系数据库理论应用于 XML 模式规范化设计的思想,这一思想还没有付诸实施。该文给出表示 XML 模式和 DTD 的层次模式和用于 XML 模式和 DTD 规范化设计的层次分解过程,并对产生的层次模式进行分析。在算法产生的层次模式中,完全 MVD 和嵌入 MVD 的集合由给出的 MVD 集合导出。
关键词:
XML模式,
文档类型定义(DTD),
层次模式,
层次模式树,
多值依赖(MVD)
Abstract: Now there are a few researches on XML schemas and DTDs normalization design. Existing researches are still in the beginning. W. Provost proposes the idea applying the theory of relational database to XML schemas normalization design. This idea is not put into practice. The paper presents hierarchical schemas for representing XML schemas and DTDs and the procedure of hierarchical schemas design for XML schemas and DTDs normalization design, and analyzes produced hierarchical schemas. The set of full and embedded MVDs in hierarchical schemas produced by the algorithms are implied by the given set of MVDs.
中图分类号:
李元益. 用于XML模式和DTD设计的层次分解[J]. , 2005, 31(03): 98-100.
LI Yuanyi. Hierarchical Decomposition for XML Schemas and DTD Design[J]. , 2005, 31(03): 98-100.