xrdb造句

• In this thesis, a xrdb system was design for study the issues, xrdb system is a xml storage and query system and relation database as it's physical store stucture
  论文以设计一个基于关系数据库的xml存储查询系统(下面简称xrdb系统)来研究上面的论题，xrdb是一个以关系数据库为底层的xml存储和查询系统。
• In this thesis, a xrdb system was design for study the issues, xrdb system is a xml storage and query system and relation database as it's physical store stucture
  论文以设计一个基于关系数据库的xml存储查询系统(下面简称xrdb系统)来研究上面的论题，xrdb是一个以关系数据库为底层的xml存储和查询系统。
• The feature of xrdb system is follow : the relation of xml element and it's son is keeped by relation-dictionary, as the same time the relation-dictionary keeped the element attributes, content and their corresponding in relation database . in order to get the more efficiency relation table, the dom tree of xml schema is trimed for getting orderliness xml schema . for efficiency rewrited path expression into sql, the relation dictionary keeps every xml element's absolute path
  xrdb系统的主要特色有：用关系字典保存xml元素的父子关系，元素的属性，内容以及它们对应的关系数据库表名，列名；对xml模式的dom树进行修剪，使xml模式整洁，从而使映射得到的关系的更合理；关系字典保存了每个元素的绝对路径，可以快速地把路径查询重写为结构化查询；xrdb的查询结果是原来xml文档的文档片段。