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discrete schema
相关语句
  离散模式
     Since we use a discrete schema torepresent a part of XML database, the dissertation represents implementation of query as matching or homomorphism of schema subgraph in XML database based on the mentioned notion of the schema and abstract of XML database (extensible OEM model).
     这一XML数据库是基于离散XML模式的,是一个基于离散模式的XML数据库系统(DISXDBS)。
短句来源
     Based on the features of discrete schema and graph containment, the article puts forward a unique notion of schema containment. Under condition of schema2 being contained in schema1, the article has concluded that if schema1s matches are already known the search space for getting matches of schema2 will be decreased and if matches of schema2 are known several matches of schema1 will be known instantly.
     文中根据离散模式的特点及其图的蕴含概念引入了独特的模式蕴含概念,经研究得出结论:如果模式2蕴含于模式1,则在已知模式1的查询结果时,求模式2时的搜索空间可大大地减小,另外,如果已知模式2的查询结果时,则至少立即就可知模式1的若干个查询结果。
短句来源
  “discrete schema”译为未确定词的双语例句
     XML Database Query Based on Discrete Schema
     XML数据查询的CSP实现和算法改进
短句来源
     In this article we first introduce our project, i.e. XML database query system based on discrete schema briefly.
     本文首先简要介绍了我们的基于模式匹配的 XML 数据库系统 (DISXDBS)组成 ;
短句来源
     Thirdly, several properties including closure of operation "union", "intersection", "difference" and "complement" are proved with respect to this automaton. Fourthly, the parser parsing XML automaton based documents is successfully developed. Finally, the significances of the automaton are stated for authors′ forthcoming project: Discrete Schema based Xml DataBase System.
     该文首先针对现有的XML语法进行了抽象及封闭性分析 ,得到了扩展XML语法 ,接着提出了一种XML自动机的概念 ,证明了它与扩展的XML语法等价 ,而且具有“并”、“交”、“差”和“补”运算下的完全封闭性 ,然后开发了一个分析器 ,对由此扩展语法生成的对象进行分析 ,最后阐明了XML自动机对于文中所建立的基于离散的XML模式数据库系统模式集成的意义
短句来源
     In this paper, introduce XML database query system based on discrete schema briefly,and the main purpose is to introduce a method to store and update XML documents in a B~+ tree based on DISXDBS . And then, taking a glance some at other XML storage strategies.
     本文简要介绍了基于模式匹配的XML数据库系统(DISXDBS)组成,重点研究了基于模式匹配的XML数据库系统(DISXDBS)上实现用B+树存储XML文档以及对其进行查询、更新等简单操作,并对目前几种常见XML文档的存储策略进行比较.
短句来源
  相似匹配句对
     XML Database Query Based on Discrete Schema
     XML数据查询的CSP实现和算法改进
短句来源
     On Discrete Filtrations
     离散型σ-域流
短句来源
     On Schema Translation
     图式翻译漫谈
短句来源
     From the famous discrete W.
     从离散型W.
短句来源
     Mapping Schema to Relations
     从SCHEMA到关系的映射
短句来源
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XML is an emerging Internet standard for data representation and exchange. Effective storage of XML data is one of the important dimension concerning to XML-related technology. In this article we first introduce our project, i.e. XML database query system based on discrete schema briefly. Secondly, we put the focus on how to store and update XML documents in a Btree. Finally, we take a glance of some XML known storage strategies.

XML正逐渐成为 WWW数据表示和交换的标准 ,如何有效实现对于 XML数据的存储、查询及更新等操作是 XML 相关技术研究中的一个重要领域。本文首先简要介绍了我们的基于模式匹配的 XML 数据库系统 (DISXDBS)组成 ;然后研究了如何实现用 B树存储 XML 文档以及对其进行查询、更新等操作 ;最后与目前存在的几种 XML 文档的存储策略进行比较。

This paper puts forward a notion of extensible XML grammar and automaton after reviewing current situation of various XML grammars. A variety of abstracts is made in the work of this paper, which is convenient and caters to the need of different users. Firstly, based on a widely recognized XML grammar the extensible XML grammar or XML schema is created. Then an XML automaton is built to justify the extensible XML grammar for an XML algebra. Thirdly, several properties including closure of operation "union",...

This paper puts forward a notion of extensible XML grammar and automaton after reviewing current situation of various XML grammars. A variety of abstracts is made in the work of this paper, which is convenient and caters to the need of different users. Firstly, based on a widely recognized XML grammar the extensible XML grammar or XML schema is created. Then an XML automaton is built to justify the extensible XML grammar for an XML algebra. Thirdly, several properties including closure of operation "union", "intersection", "difference" and "complement" are proved with respect to this automaton. Fourthly, the parser parsing XML automaton based documents is successfully developed. Finally, the significances of the automaton are stated for authors′ forthcoming project: Discrete Schema based Xml DataBase System.

XML是目前已被广泛采用的WWW上信息交换和表示的技术之一 ,被称为Internet时代的通用数据格式 .该文首先针对现有的XML语法进行了抽象及封闭性分析 ,得到了扩展XML语法 ,接着提出了一种XML自动机的概念 ,证明了它与扩展的XML语法等价 ,而且具有“并”、“交”、“差”和“补”运算下的完全封闭性 ,然后开发了一个分析器 ,对由此扩展语法生成的对象进行分析 ,最后阐明了XML自动机对于文中所建立的基于离散的XML模式数据库系统模式集成的意义

Based on the features of discrete schema and graph containment, the article puts forward a unique notion of schema containment. Under condition of schema2 being contained in schema1, the article has concluded that if schema1s matches are already known the search space for getting matches of schema2 will be decreased and if matches of schema2 are known several matches of schema1 will be known instantly. The conclusion is used for optimizing query.

文中根据离散模式的特点及其图的蕴含概念引入了独特的模式蕴含概念,经研究得出结论:如果模式2蕴含于模式1,则在已知模式1的查询结果时,求模式2时的搜索空间可大大地减小,另外,如果已知模式2的查询结果时,则至少立即就可知模式1的若干个查询结果。这一研究成果被直接用于改善查询效率。

 
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