查询词典 distributed database

On this basis a design scheme of the database for SCADA based on the component object model is presented, in which the content and background of IEC 61970 standard is introduced first, then some different component model are assayed , then a design scheme of the database for SCADA based on the component object model is presented, the foreground application of SCADA is connected with the database by components.The new model have some advantages: system have disrelation with develop language ,the peculiarity of COM make the system fit in with different apply program developed with different language;(2) the system can be modified and upgraded easily by means of upgrading the component modules;(3) the system can be enlarged easily by means of adding the new component modules without quiet amendment in old system.

为此，本文介绍了一种基于组件对象模型的SCADA数据库系统设计方案，文中首先介绍了IEC61970标准的内容及产生背景，分析了几种不同的组件模型，在此基础上，提出了一种基于COM组件技术的SCADA数据库设计及访问模式，在此模式下根据SCADA数据库不同的功用划分了不同的组件模块，利用组件连接数据库与SCADA前台应用，基于组件技术的SCADA数据库设计有以下一些特点：(1)与语言无关性，COM的特性决定了此系统上可以应用不同语言开发的应用程序；(2)系统易修改及维护，用户可以通过更新组件模块的方式修改及维护系统；(3)系统易扩展新的功能，用户可以通过开发新的组件方式将新的应用与原系统结合，而不用对原系统做很大的修改。

In accQrdance with the concerned isomerism and distributivity of the database system in the long-distance education, and variety of database inter-connectivity technology, we law lessons from the successful application in TCP/IP communication protocol, and adapt to use the Layer thought to realize the share of distributive isomeric database information.

针对目前远程教育中所涉及的数据库系统的分布性和异构性，数据库互连技术的多样性，本文欲借鉴网络通信协议的成功之处，采用分层结构的思想去实现分布式异构数据库信息的共享。

The transferring of database is to want to be in the purpose database to reappear the source database information, this kind of emersion include the information contents and the intact structural emersion.

数据库的交互就是要在目的数据库再现源数据库信息，这种再现包括信息内容和结构的完整再现。

Technical issues in developing extendible graphic database management system were discussed. The emphasis was put on the organization and structure of database, implementation of functional operations, especially the coordination of database functions with graphic user interface.

通过对支持计算机辅助居住区规划设计的数据库管理原型系统的开发，讨论了在AutoCAD环境下开发开放式图形数据库管理系统的有关问题，重点介绍了有关数据库的组织与结构、数据库的操作及其与图形用户界面结合的实现等技术问题。

Laboratory equipment managements system is a typical management information system, the system is a software system that adapts to the urgent need of management of laboratory equipments to school, the development including two aspects, one is the establishment and maintenance of the background database , the other is the development of fore-end application. After analysis and comparison, we decide to use ASP and SQL as the development tools, use various object-oriented development tools. Especially the data window , an intelligent database objects which can control the database conveniently and simple. First establishes application system prototype in a short period of time, and then, carries out the need iteration on the initial prototype system, constantly revised and improved, till to the viable system that the users satisfy

摘要实验室设备管理系统是一个典型的信息管理系统，本系统是一个为适应对学校实验室设备管理的迫切需求而设计开发的软件系统，其开发主要包括后台数据库的建立和维护以及前端应用程序的开发两个方面，经过分析和比较，我们决定使用ASP和SQL作为开发工具，利用其提供的各种面向对象的开发手段，尤其是数据窗口这一能方便而简洁操纵数据库的智能化对象，首先在短时间内建立系统应用原型，然后，对初始原型系统进行需求迭代，不断修正和改进，真到形成用户满意的可行系统。

Database, GIS and. Then, the design of the survey database in detail: Requirementanalysis, and function design. Then the impletion of the surveying spatial database inclass view.

首先介绍了基础地理管理系统的需求状况，分析测绘基础地理信息管理系统需要达到的目标；接着说明的是空间数据库的设计，详细说明了数据库设计、功能设计；然后详细说明了数据库实现的类视图。

With the map database building, it is a instancy task to produce map based on the map database, and at same time to ask to update the database.

随着地图数据库的相继建立，以地图数据库为主要数据源进行地图生产成为迫切需求，并要求在地图生产的同时，实现对原有的地图数据库更新。

The system can receive data from the STEP-NC interpreter by using the resource model of the function block type database, then translate the receiving data into the data of function block format; the tool path generator can dynamically transfer the function block in the function block type database; it can also use the data of function block management resource to export DSP order; depending on VC to edit function database and Dynamic Linkable Library, we can connect the tool path generator with research platform, use the tool path generated from the tool path generator to drive the tool move.

结果 通过功能块类型库中的资源模型接收STEP-NC解释器解释的数据，并将接收的数据转化成功能块格式的数据；依据工艺规划好的加工工序，刀具路径生成器动态调用功能块类型库中的功能块；利用功能块处理资源提供的数据，输出DSP指令；依靠VC语言编辑函数库和动态链接库，将刀具路径生成器与实验平台建立关联，基于刀具路径生成器生成的刀具轨迹驱动机床刀具运动。

The multiple-database model can be used to work around the conflict situations inherent in long lunation database sessions.Since each user from the shared database and work against.

多个数据库模式可用来围绕长期数据库对话所固有的矛盾形势而工作，因为每一个用户可从共用数据库拷贝数据这不同于他／她的专用数据库，该数据库与共用数据库至少在表面上分开，这样用户就能避免矛盾形势。

Based on the Fact Sheet: Journal Selection for Index Medicus/MEDLINE and the Fact Sheet: Response to Inquiries about Journal Selection for Indexing at NLM, this article was to introduce the MEDLINE database, the process of applying a journal to be indexed in the MEDLINE database and review process. Meanwhile, this paper was to share Tzu Chi Nursing journal Editor's experiences in applying the Tzu Chi Nursing Journal to be indexed in the MEDLINE database, and hopefully these experiences can provide other nursing publishers with a reference.

本文参考「MEDLINE期刊筛选条件之说明」与「申请加入国家医学图书馆资料库之说明」此两份文件，兹对MEDLINE资料库、申请加入MEDLINE资料库之过程以及审查过程做一简明介绍，同时也分享慈济护理杂志总编辑向「美国国家医学图书馆」提出申请「慈济护理杂志」加入MEDLINE资料库之经验谈，期望此经验可做为其它护理杂志社的参考。

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。