数据库

Entireness , safety for guarantee data base, the data base design must , develop strictly according to the data base to come to design that project principle.

为了保证数据库的完整、安全，数据库的设计必须严格按照数据库工程原理来设计、开发。

Excogitate for the historical database and the use of SQT/SQD data block are the main aspects of the software designing. The fifth parts of the paper also give a new way for backup and compress the database online.

论文第五章主要介绍了SCADA系统的软件设计工作，着重研究了历史报警数据库的开发，利用iFix自身的SQT块和SQD块实现操作记录的数据库存放工作，并给出了自动的数据库在线压缩和备份实现方案。

To realize the management of the flexible subject categories and the database system, an cross-platform information management software has been developed, which also explored an intelligent functional module to fetch and analyze web information automatically.

本文在Linux系统下，编制了专题信息系统平台和管理工具：采用Web数据库技术，构建了后台的数据库系统；建立了前端网站系统(http：//159.226.63.156/metalnanol/)，包括专题信息库和各种检索功能与用户交流功能；建立了跨平台的信息管理工具，实现了灵活的专题信息分类管理、网络信息的自动获取与分析功能以及数据库各项管理功能。

In the course of development, it accomplishes the building and maintaining of backstage supporter's database and the development of forestage supporter's application program which based on many oriented object tools of development provided by PowerBuilder, especially its data window that is intelligent object that can handle the database easily.

在开发的过程中，采用了PowerBuilder提供的各种面向对象的开发工具，尤其是数据窗口这一能方便而简洁操作数据库的智能化对象，进行后台数据库的建立和维护以及前端应用程序的开发，建立起数据一致良好性，并且具有强数据安全性的数据库，应用程序功能完备、善于使用。

As a result of analyzing, because of Delphi's strong support ability to the database while developing the forestage and succinct and lucid programming language, powerful component, flexible and convenient programming environment and the offered support of window body that develops the fast prototype, We decide to use Borland Delphi 6.0 of Borland Company as the developing instrument of forestage together with Microsoft SQL Server 2000 as backstage supporter.

经过分析，由于Delphi 在开发数据库前端对数据库的强大支持能力及其具有的简洁明快的编程语言、功能强大的组件、灵活方便的编程环境和提供的窗体对快速原型开发的支持，我们以Borland公司的BORLAND DELPHI 6.0作为前端开发工具，以 Microsoft SQL Server 2000作为后台数据库开发工具，系统采用C/S结构。

Based on the research of the knowledge type, the author puts forward the Database-based knowledge representation, this method makes the database have the knowledge base function, make the knowledge representation and the knowledge management easy.

在对系统中知识组成分类研究的基础上，对应用于该系统中的基于数据库的知识表达模式进行了深入的探讨，该方法的应用，使数据库具备了知识库的功能，方便了知识的描述、知识数据库的管理。

Then, the implement technique in the database table design and image data explanation of a city landscape retrieval system is illustrated, and the authors also verified that using extended relational database management system to store and manage image data is effective and practicable.

现在面向对象数据库技术的应用还不够成熟，而且用户往往更喜欢在不改变原有数据库系统的基础上增加对多媒体文档管理的要求，故用扩展现存的关系数据库管理系统来支持类似于二进制对象的多媒

Instead of remining impertinently, ISPBP updates the frequent items and patterns found previously by implicit merging and discovers new patterns by projection database.

对于因增量数据库新产生的频繁模式，利用了在增量数据库中出现的频繁项集来减小投影数据库，进一步提高了算法的效率。

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。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。