查询词典 database key

Third chapter illustrate the design scheme for justification development system, amalgamation steer the argumentum;And code design in the detailed design sum the database design of whole system;Recommended the detailed design information of sum of the shuttering cake structure of the aetioporphyrin system;Analyzed the library to manage the system's appliance demand, according to the database design theory proptosis of one-step and one-step earth joint system demand manual, local ER general view, overall situation ER general view, system relation modal, leaven the modal;Arrangement in parallel proptosis the valve key source of the said system code in the procedure the amalgamation commit the interpretation, justification.

第三章说明开发系统的设计方案，并进行论证；以及详细设计中的代码设计和整个系统的数据库设计；介绍了本系统的模块结构和详细的设计信息；分析了图书馆管理系统的应用需求，按照数据库设计理论一步一步地给出了系统需求说明书、局部ER图、全局ER图、系统关系模式，子模式；并列出了该系统的关键源程序中的代码并做解释、说明。

RETRIEVAL STRATEGY: The relevant articled were searched for in Pubmed database by researcher of this article with the key words of "stent graft, covered stents, cerebrovascular disease" in English, and with the key words of "covered stent, cerebrovascular disease" in Chinese in VIP database. 223 English and 196 Chinese articles were selected and reviewed primarily.

检索策略：由该论文的研究人员应用计算机检索Pubmed数据库的相关文献资料，以"stent graft， covered stents， cerebrovascular disease"为检索词，共检索到223篇相关文献，应用维普数据库以"带膜支架，脑血管疾病"作为检索词，共找到196篇中文文献。

This paper expounds the necessity of construction of teaching reference book database in academic libraries, and probes into some key problems in process of the construction, such as collection of the booklist, database construction criterions, data maintenance and update, copyright protection etc.

摘要本文阐述高校图书馆建立电子教参书资源库的必要性，探讨在建设电子教参书资源库过程中必须注意的若干问题，包括：教参书书目采集问题、建库标准和规范问题、数据维护与更新问题及版权问题等。

Query of distributed database is to provide an interface between user and database, which is key technique in this field.

分布式查询处理是用户和分布式数据库的接口，是分布式数据库系统的主要问题之一。

Gained knowledge is the key in risk source recognition database.This paper expound the way to gain knowledge and how to realize it in risk sources recognition database,and try to make it have better extensity and reasonableness.

在危险源辨识结果库中，知识的获取是重点和难点，文中着重论述了危险源辨识结果库知识的获取方法与实现，力图使该系统的知识库具有较好的扩展性和合理性。

Beginning with the requirement of currently OA, we expound the Official Document Circulation the technique development of the system with the project -- that the need development, morrow will adopt to system operate system, database the choice of the system and development tool, proceeds argument, further detailed description total need of system is with key technique towards each function mold piece rule for proceeding for of analysis designing, lay emphasising Dispatch mold piece, Furl mold piece , then in a specific way relating the database designing and this system at design realize inside use and calculate way, finally talked the oneselfed at this a development process realizing of inside and insight.

本文以当前对自动化办公的需求开局，阐述了公文流转的概念以及公文流转系统的技术动态和需求动态，提出了系统开发的目标，紧接着对系统将要采用的方案--操作系统、数据库系统及开发工具的选择，进行了论证，进一步详细叙述了系统总体需求和对各个功能模块的分析设计，侧重的进行了发文模块、收文模块概述，然后具体讲述了数据库设计的规则以及本系统在设计实现中所用到的关键技术与算法，最后谈了自己在这一开发过程中的体会与心得。公文流转，发文，收文， C/S 模式

METHODS: The literatures related to the treatment of nephrotic edema were retrieved from the following: Chinese Biological Medicine Database, Chinese Journals Full-text Database (CNKI, 1994-2006), Chinese Technological Periodicals Database (VIP, 1989-2006), Chinese Evidence Biological Medicine/Cochrane Central Database, Cochrane Library Database, MEDLINE (1966-2006), EMBASE (1975-2006), MEDLARS, SCI (1985-2006) and OVID by electron and craft search with the following key words: nephrotic syndrome, edema, recalcitrant edema, refractory edema or resistant nephrotic edema, and treatment, diuretic therapy or human albumin treatment.

以"肾病综合征"、"水肿或顽固性水肿或难治性水肿"、"治疗或利尿治疗"为中文关键词，以"nephrotic edema 或 recalcitrant edema 或 refractory edema 或 resistant nephrotic edema "、"treatment 或diuretic therapy 或 human albumin"为英文关键词，采用电子和手工检索中国生物医学文献数据库、中国期刊全文数据库（CNKI，1994～2006.12）、维普中文科技期刊数据库（1989～）、中国循证医学/Cochrane 中心数据库、Cochrane图书馆等数据库、MEDLINE(1966.11-2006.2)、EMBASE(1975-2006.12)、MEDLARS、SCI(1985-2006.12)及OVID。

The traditional query tree optimization methods,parallel database optimization methods based on left linear trees and right linear trees,bushy trees,and operation of the forest,have their own pros and cons,they have been more in-depth and maturity of the study.The query optimization method based on multiple weighted tree has studied its model of parallel query plan,its complexity model of parallel query plan and query optimization algorithms.The semantic query method transforms an inquiry into one or several semantic equivalence inquiries then has to find and implement a strategy to achieve a better query.Agent-based parallel database query optimization using Multi-Agent technology to automatically search the integrity constraint conditions which are related to the determined query,there for,the efficiency between several relations' joins has been greatly improved.The parallel optimization algorithm,based on genetic algorithm which is suitable for multi-joins of cluster environment,has deeply studied the relations storage options,multi-joins query optimization and query processing and other key technologies based on cluster parallel database.

传统的查询树优化方法，即基于左线性树、右线性树、浓密树、操作森林的并行数据库查询优化方法，各有优劣，对其的研究比较深入、成熟；基于多重加权树的查询优化方法，研究了其并行查询计划模型、并行查询计划的复杂性模型和查询优化算法；语义查询优化方法将一个查询变换成一个或数个语义等价的查询，进而寻找并执行这些等价查询中具有较好实现策略的一个；基于Agent的并行数据库查询优化采用Multi-Agent技术自动查找与给定查询有关的完整性约束条件，使得多个关系间连接操作的效率得到很大的提高；基于遗传算法的并行优化算法，深入研究了基于机群并行数据库中关系存储的选择、多连接查询优化和查询处理等关键技术。

METHODS: The literatures related to the treatment of nephrotic edema were retrieved from the following: Chinese Biological Medicine Database, Chinese Journals Full-text Database (CNKI, 1994-2006), Chinese Technological Periodicals Database (VIP, 1989-2006), Chinese Evidence Biological Medicine/Cochrane Central Database, Cochrane Library Database, MEDLINE (1966-2006), EMBASE (1975-2006), MEDLARS, SCI (1985-2006) and OVID by electron and craft search with the following key words: nephrotic syndrome, edema, recalcitrant edema, refractory edema or resistant nephrotic edema, and treatment, diuretic therapy or human albumin treatment.

以&肾病综合征&、&水肿或顽固性水肿或难治性水肿&、&治疗或利尿治疗&为中文关键词，以&nephrotic edema 或 recalcitrant edema 或 refractory edema 或 resistant nephrotic edema &、&treatment 或diuretic therapy 或 human albumin&为英文关键词，采用电子和手工检索中国生物医学文献数据库、中国期刊全文数据库（CNKI，1994～2006.12）、维普中文科技期刊数据库（1989～）、中国循证医学/Cochrane 中心数据库、Cochrane图书馆等数据库、MEDLINE(1966.11-2006.2)、EMBASE(1975-2006.12)、MEDLARS、SCI(1985-2006.12)及OVID。

dwpi patent database of thomson group was chosen, led signal display technology patents between january 1, 1965 to december 31, 2008 were collected and the associated patent database was established. derwent innovation index patent analysis system was chosen, these led signal display technology patents were analyzed deeply from the total amount of patent applications, key led patents and key patent holders respectively. the present patent status of abroad and china's were compared. the patent strategy of developing our nation's led signal display technology was also discussed.

选择thomson集团的dwpi英文专利数据库，采集1965年1月1日到2008年12月31日期间的led信号显示技术专利文献，建立英文专利数据库；再选择derwent innovation index专利分析系统，分别从专利申请总量、重点专利技术和重点专利持有人等方面，对led信号显示技术专利进行深入的分析，并对比分析国内外led信号显示技术专利的现状，提出发展我国led信号显示技术的专利策略。

This brought fixed cost, but it also is meant at the same time use a source to won't make you singlehanded assume a problem.

这带来了一定的成本，但它同时也意味着使用开源不会让你独力承担问题。

He gained a small fortune in real estate.

他在房地产上发了一笔小财。