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首页> 外文期刊>Journal of Intelligent Information Systems >PSE: An Object-Oriented Representation for Modeling and Managing Part-of Relationships
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PSE: An Object-Oriented Representation for Modeling and Managing Part-of Relationships

机译：PSE：用于建模和管理部分关系的面向对象表示

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摘要

Part-of relationships are needed to model structures of composite objects. Especially, composite objects, known as physical assemblies, are very popular in several applications. The existing object-oriented representations of physical assemblies and query languages based on them have several disadvantages. Forexample, they suppose that the user knows the structure of a physical assembly completely. This is not a realistic requirement in those cases where a physical assembly consists of a huge number of parts. Likewise the user has in them to control traversals of physical assemblies, i.e. they have a low degree of declarativity. Further, they do not support intensional and combined extensional-intensional queries which would be necessary in an advanced manipulation of physical assemblies. We develop the PSE (Part-of Structure Element) representation for removing the above disadvantages. The PSE representation is a set theoretical and constructor-oriented representation for physical assemblies and it can be used in the implementation based on both the object-oriented and deductive object-oriented database (DOOD) paradigms.
机译：需要部分关系来对复合对象的结构进行建模。尤其是，称为物理装配体的复合对象在几种应用中非常流行。现有的物理程序集和基于它们的查询语言的面向对象表示具有一些缺点。例如，他们假设用户完全了解物理组件的结构。在物理装配体由大量零件组成的情况下，这不是现实的要求。同样，用户在其中必须控制实体装配的遍历，即它们具有较低的声明性。而且，它们不支持在物理装配的高级操作中必需的内涵式和延伸-内涵组合查询。我们开发了PSE（部分结构元素）表示形式，以消除上述缺点。 PSE表示是一组针对物理装配的理论和面向构造函数的表示，并且可以在基于面向对象和演绎的面向对象数据库（DOOD）范式的实现中使用。

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