查询词典 distributed database

Limited by traditional database technology, the spatial data and attribute data were stored dividually. With the transfermation of GIS application to the Distributed Management System, concurrency control, data sharing and network communication become the new problems.

受以往数据库的限制，空间数据和属性数据是分开存储的，随着GIS应用向分布式管理系统领域的转移，在数据共享、网络通信、并发控制等方面出现了许多难以解决的问题。

This paper mainly introduced distributed database querying processing ways, and introduced the query of SQL at the end of this paper.

本文主要研究了基于分布式数据库的查询优化处理算法，并在文章结尾谈到了关于SQL语句的优化。

In order to meet the needs of combining the total database system and the future development of system. The system should have the abilities of extensibility, maintainability and good transplantability. Using the model based on distributed multilayer structure can solve the problem above efficiently.

同时，为了满足与工程总数据库系统的衔接及系统将来发展的需要，工程勘测管理信息系统应当具有可扩充的能力和可维护的能力，以及应当具有很好的可移植性，而采用分布式多层结构模型正好可以有效地解决上述问题。

It can support the main stream database now, such as SQL Server 2000, Oracle 9i, DB2, and can be distributed on servers running Weblogic, Tomcat, JRun and JBoss. It can satisfy most requirements. The user interface is simple and wieldy through the XML configuration file and "taglib"; it is convenient for developing.

该组件支持SQLServer2000，Oracle9i，DB2等主流数据库，并且可以部署在Weblogic，Tomcat，JRun，JBoss等Web服务器上，能够满足绝大部分开发要求；该组件的接口简单易用，主要是以XML配置文件和taglib的形式体现，方便二次开发。

Once detected, nondistributed and distributed deadlocks are handled by the database and application in the same way.

无论分布式或非分布式死锁，在数据库及应用程序中的处理方法都是相同的。

This paper's work is trying to present a more efficient method to locate the agent in distributed networks on the basis of pioneers' researches, and assess the performance of this method.This paper begins its discussion with agent technology's background and basic conceptions, characteristics, and presents the researched problem, that is, researching new agent locating method; then introduces several traditional locating methods: brute force searching, database method and path proxies, and analyses their features and locating efficiency. For describing the agent locating better, this paper formalizes the agent, presents a proper definition, and abstracts agent's migration process, proposes a metaprocess concept and decompounds migration process with it.

本文首先介绍了代理技术的产生背景以及基本概念、性质，提出了需要解决的问题，即对新的代理定位的方法的研究；然后总结介绍了前人文献中的一些代理定位方法：穷举搜索法、位置数据库法和迁移指针法，并分析了这些算法的优缺点和代理定位效率；为了更准确的描述代理定位，本文对代理进行了形式化，确定了一种适合的代理定义，并对它的性质给予形式说明；在此基础上抽象出代理迁移的本质，根据它对资源的控制对迁移类型进行分类；提出元过程概念，并分解表示定位过程，并介绍了过程时间连续性。

Techniques such as different level knowledge representation methods,multiple inference engines,interrupt inference process,global-blackboard-based distributed problem solving,knowledge-based modeling and data excerpting,and deductive database ma- nagement method,are used in DECISION-E.

在DECISIGN-E 中还采用了下面的一些特殊技术：不同层次的知识表达方法，多推理机，推理中断处理，基于全局黑板的分布式问题求解，基于知识的建模及数据抽象，演绎数据库管理方法。

Updates to the database are rapidly distributed to every participating computer, immunizing them against the newly discovered scam.

更新到数据库正在迅速分发到每个参与的电脑，进行免疫接种，他们对新发现的骗局。

It implements Web crawling through distributed technology, and builds index database through accidence analyzing Chinese characters separating unuseful words deleting etyma extracting index words selecting and lexicon. The level system uses new model of Web accessing and level computation to build Web level system so that the requirement for computer resources is greatly reduced.

该搜索引擎使用分布式技术实现网页获取模块；通过词法分析、中文分词、无用词汇删除、词干提取、索引词条选择和词典等技术建立索引数据库；该搜索引擎的级别系统使用了新的网络访问模型和级别计算模型，大大降低了搜索引擎对于计算机资源的要求。

China yike》 commerce system is a example. Apply the example design a distributed database system.

本文是以电子商务的发展为背景，以《中华易客》商务系统项目为例，对分布式数据库系统进行实际的研究与设计。

Bob Eckert has been chairman and chief executive of Mattel for eight years.

美泰董事长兼首席执行官鲍勃·埃克尔特在任已8年。

The outlook for honors and disgraces carries on and surpasses the traditional outlook for honors and disgraces theoretically, and carries on and develops the theory of construction of socialist mora...

社会主义荣辱观的提出在理论上是对传统荣辱观的一次继承和超越，是对社会主义道德建设理论的继承和发展，在实践上有利于形成良好的社会风尚。