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arXiv 0901.2224cs.DB
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面向概念的模型与查询语言

Concept-Oriented Model and Query Language

Alexandr Savinov

摘要:

我们描述了一种新的数据建模方法,称为面向概念的模型(COM),和一种新的面向概念的查询语言(COQL)。该模型基于三个原则:对偶原则假设任何元素都是由一个单位和一个实体组成的一对,包含原则假设任何元素都有一个超元素,序原则假设任何元素都有一些更大的元素在一个偏序集合中。面向概念的查询语言是基于一种新的数据建模结构,称为概念,概念之间的包含关系,概念偏序,其中更大的概念是由它们的字段类型表示。它演示了如何COM和COQL可以用来解决三个一般的数据建模任务:逻辑导航,多维分析和推理。逻辑导航基于投影和反投影两种操作。多维分析使用乘积运算从沿着所选维路径选择的层次概念产生立方体。推理被定义为一个两步的过程,其中输入约束首先使用解投影向下传播,然后使用投影向上传播受约束的结果。

英文摘要:

We describe a new approach to data modeling, called the concept-oriented model (COM), and a novel concept-oriented query language (COQL). The model is based on three principles: duality principle postulates that any element is a couple consisting of one identity and one entity, inclusion principle postulates that any element has a super-element, and order principle assumes that any element has a number of greater elements within a partially ordered set. Concept-oriented query language is based on a new data modeling construct, called concept, inclusion relation between concepts, and concept partial ordering in which greater concepts are represented by their field types. It is demonstrated how COM and COQL can be used to solve three general data modeling tasks: logical navigation, multidimensional analysis and inference. Logical navigation is based on two operations of projection and de-projection. Multidimensional analysis uses product operation for producing a cube from level concepts chosen along the chosen dimension paths. Inference is defined as a two-step procedure where input constraints are first propagated downwards using de-projection and then the constrained result is propagated upwards using projection.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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