Because of the rapid development of internet , the problem of information overloading becomes very serious . people need some efficient ways to get exactly what they need from the various unstructured or semi - structured data 由于互联网的飞速发展,信息过载( informationoverload )的问题越来越严重,人们需要各种方法来快速地从大量不规则分布的数据中找到自己所需要的。
Integration services - provides management support for integration services package storage and execution . full - text search - quickly creates full - text indexes on content and properties of structured and semi - structured data to allow fast linguistic searches on this data 本主题的其余部分提供的信息有助于了解默认行为,还有助于为您安装的sql server配置sql server服务帐户:
In study of xml data model , we investigate the semi - structure charasteristics of xml : selfdescribe , graph - based model and irregular then the compedson and analysis of normal tree - structure model and node labeled direct graph are presented 对xml的数据模型,我们研究了xml的半结构化特性:自描述、图结构和不规则。然后对比分析了xml常见的树结构模型和图结构模型对xml查询基本操作的影响。
At the same time , a large amount of heterogeneous and semi - structured multimedia teaching resources disseminated on the network restrict the information expression , exchange and sharing in semantic heterogeneous environment 与此同时,海量的散布在网络上的非结构化或半结构化的异种多媒体教学资源限制了语义异构环境下的信息表示、交换、共享和智能化的应用,因此,迫切需要扩展现有的数据表示机制。
When storing xml document in relation database , it needs to split the semi - structured xml into rows and columns of relations . it is time consume and breaks the original structure of xml document . so it reduce the speed of data processing 当xml数据存储到关系数据库时,需要将树状结构的xml文档映射成平面的行和列,这样不仅增加了转换的时间,而且破坏了文档本身的结构,从而降低了数据处理的速度。
Making study of data model , first we investigate xml data model and semi - structure data model . and to research the semi - structure characteristics of xml : self - describe , graph - based model and irregular . then the analysis of normal tree - structure model is presented 在对数据模型的研究中,首先介绍了xml数据模型和半结构化的数据模型,研究了xml的半结构化特征:自描述、图结构和不规则,并分析了xml常见的树结构模型。
( 2 ) a new data model called xcdm is presented based on two semi - structured data model oem and oim . in web information integration system , it ' s a general method to provide an efficient common data model ( cdm ) in order to integrate multi - data source with different data model Xcdm可以起到某种元数据的作用,统一描述半结构和无结构数据,它符合公共数据模型的几点准则,完全适合作为web信息集成系统中的公共数据模型。
It had already been used in the fields , such as enterprise , military , economy , environment , medical science , energy , traffic - public and safe , etc . practice has proved dss is the effective way to solve problem with multi - goal , multi - level and semi - structure already 目前已广泛应用到企业、军事、经济、环境、医学、能源、交通和公共安全等领域。实践证明dss已经成为解决半结构化的多层次、多决策者和多目标决策问题的有力工具。
Nsf - europe workshop : " nips 2001 workshop on machine learning methods for text and images . " the aim of the workshop is to present new perspectives and new directions in information extraction from structured and semi - structured data for machine learning 国家科学基金会欧洲研讨会:生理科学新闻报, 2001年文字与影像的机器学习方法之研讨会.研讨会的目标,是从机器学习结构化与半结构化资料所萃取出来的资讯中,发表当中的新看法与新方向。
Based on the points , this thesis studied wi as a whole , and obtained the following results : ( 1 ) ontology - guided techniques and architecture of wi system ; ( 2 ) deductive object model with semi - structured features ( domsf ) as the unified data model for wi system 在此基础上对wi进行全面的研究,获得以下研究成果: ( 1 )以本体模型( ontology )为指导的wi系统方法和结构。 ( 2 )演绎的带有半结构化特征的对象数据模型domsf ,作为wi系统的统一数据模型。