在对象-关系数据库中有效地存储和维护半结构化数据

Proceedings of the Third International Conference on Web Information Systems Engineering, 2002. WISE 2002. Pub Date : 2002-12-12 DOI:10.1109/WISE.2002.1181661

Yuanying Mo, T. Ling

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引用次数: 16

摘要

我们建议使用对象关系数据库管理系统来存储和管理半结构化数据。采用ORA-SS (Object-Relationship-Attribute model for Semi-Structured data) (Dobbie et al.， 2000)作为数据模型。它不仅反映了半结构化数据的嵌套结构，而且区分了对象类和关系类型、对象类的属性和关系类型的属性。ORA-SS可以指定n元关系类型的程度，并指示一个属性是关系类型的属性还是对象类的属性。现有的半结构化数据模型无法指定此类信息。我们使用这些信息将XML schema /DTD转换为ORA-SS模式，然后正确地转换为对象关系数据库，并且没有可避免的冗余。现有的技术在存储上存在大量冗余，并且引入了树实例的节点id，这在我们的方法中是不需要的。

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Storing and maintaining semistructured data efficiently in an object-relational database

We propose to use object-relational database management systems to store and manage semi-structured data. ORA-SS (Object-Relationship-Attribute model for Semi-Structured data) (Dobbie et al., 2000) is used as the data model. It not only reflects the nested structure of semi-structured data, but also distinguishes between object classes and relationship types, and between attributes of object classes and attributes of relationship types. ORA-SS can specify the degree of n-ary relationship types and indicate if an attribute is an attribute of a relationship type or an attribute of an object class. Existing semi-structured data models cannot specify such information. We use this information to translate XML Schemas/DTD to ORA-SS schemas, then to object-relational databases correctly and without avoidable redundancy. The existing techniques have a lot of redundancy in storage and introduce node IDs of the tree instance which are not needed in our approach.

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Proceedings of the Third International Conference on Web Information Systems Engineering, 2002. WISE 2002.

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