查询词典 database software

Bitemporal database design is a method of storing time dependant data records to represent both the history of the facts and the history of changes to the records in the database.

时态数据库设计是一种存储数据记录的时间依赖，同时代表事实的历史，在数据库中记录的更改历史的方法。

Cadastral database is an important branch of land and resources databases,and the effective management of cadastral database is a guarantee to the application and sustainable development of cadastral management information system.

地籍数据库是国土资源基础数据库中重要的一个子库，地籍数据库的有效管理是地籍管理信息系统应用及可持续发展的一个基础保障。

Objective:This study deals with the diagnosis of cervicobrachial and lumbodynia disease,By adopting Foxpro database and Prolog Languase, disease informatin is compiled to the form applicable to computer language and programme compilation,the cases of disease can be obtained in the process of puting in case of disease ,the differential diagnosis information is entered into database and compiled to different codes at knowledge base ,deduction diagnosis can be achieved through the code conversion and compariso...

颈腰疾病微机专家诊断系统王加宽俞立平乔闯缪天英摘要目的：研究颈腰疾病的计算机诊断。方法：采用Foxpro数据库和Prolog语言将疾病的资料编写成适合计算机语言和程序编写的格式，在病案录入过程中完成病案的获取，将疾病的鉴别诊断资料输入数据库并编写成不同的点击下列相关研究机构和相关文献作者，可以直接查到这些机构和作者被《中国知识资源总库》收录的其它文献，使您全面了解该机构和该作者的研究动态和历史。

For example, in the automatic station system which is designed for recruiting the talented men who are specialized in computer, the completement mainly lies in the following aspects: the demanding analysis of managment system of recruitment, the general design of the system, the analysis of database schema, the dividature of functional modules and implement of its each function, and accordingly the design of construction of database and applications.

本文适应部队和求职者对信息的需求，以部队自动化站系统招聘计算机类人才为例，主要完成了对招聘管理系统的需求分析、系统总体设计、数据库模式的分析、功能模块的划分和各部分功能的实现，并由此设计了数据库结构和应用程序。

The algorithm needn't generate candidate itemsets and scan database, because it employs FP-Tree to store trasanctions in database compressedly and takes full advantage of the characteristic of FP-Tree.Consequently,the complexity of space and time the algorithm used is reduced obviously in the procedure of data mining.In a thorough experimental analysis of our algorithm on real and synthetic data,we isolate the effect of the individual components of the algorithm. Our performance numbers show that MFP-Miner outperforms previous work.

该算法利用频繁模式树来压缩存储数据库中的事务，并充分利用频繁模式树的特点，在挖掘最大频繁项目集的过程中不需要产生候选项目集和扫描数据库，从而减少了算法在挖掘过程中使用的存储空间和计算时间，通过实验结果显示，该算法的性能优于同类算法。

When should searching engine spider to get when requesting a certain URL 404 condition are responded to, know this URL namely already invalidation, index no longer this webpage, feedback to delete this URL denotive webpage from inside index database to data center, of course, delete a process to need for a long time likely, and when should searching engine to get 200 condition are responded to, can think this Url is effective, can index, can collect its index database, such result is these two different Url have identical content: Define the content of 404 wrong pages oneself, this meeting is brought about appear duplicate webpage problem.

当搜索引擎蜘蛛在请求某个URL时得到404状态回应时，即知道该URL已经失效，便不再索引该网页，并向数据中心反馈将该URL表示的网页从索引数据库中删除，当然，删除过程有可能需要很长时间，而当搜索引擎得到200状态回应时，则会认为该url是有效的，便会去索引，并会将其收录到索引数据库，这样的结果便是这两个不同的url具有完全相同的内容：自定义404错误页面的内容，这会导致出现复制网页问题。

The second step, as variable content to establish a database file, the database file should contain the variable data business card printing and membership card making all the required information, requirements that correspond one-to-one with the added items and cannot be disnature.

第二步，为可变不步不天拆除数据库文件，该数据库文件不该包含可变数据制卡和会员卡制息所需的全部陈闻，请求所补充的项纲不一差答，不克不及错位。

A database schema designer that can render ERD and UML diagrams, import and export to XML and SQL for various database servers.

这是个数据库模式设计工具，能显示ERD和UML图，以及使用XML和各种数据库服务器的SQL的进行导入/导出操作。

A database schema designer that can render ERD and UML diagram s, import and export to XML and SQL for various database servers.

这是个数据库模式设计工具，能显示ERD和UML图，以及使用XML和各种数据库服务器的SQL的进行导入/导出操作。

This thesis deeply researches the J2EE security strategy on the application tier of enterprise system. The security strategy predigests the information security model and meets the security requirements expediently. But there are some disadvantages when the security requirements become more complex. The expositive security on the Web-Tier can not offer more information for authentication; there is no authentication for EJB-Tier to use, make the EJB-Tier depend on the Web-Tier; J2EE uses database or application server to manage the role information. Use database to manage the role information will increase the complex of enterprise application, and the way of application server will reduce the ability of migrate other J2EE platform. To solve these problems, the thesis designs an improved security strategy model.

本文从企业级系统应用层安全的角度出发，深入研究J2EE多层体系结构的安全策略模型。J2EE提供的安全策略简化了系统的信息安全模型，能够很方便地满足基于J2EE的分布式应用系统的安全需求，但是在面对更加复杂的安全需求时，J2EE安全策略在验证授权和角色管理中还存在不足之处：其在Web层的声明式验证机制无法为用户提供更多验证信息，可扩展性较差；在EJB层缺少业务逻辑层可供采用的验证机制，而是借助于Web层的验证机制，其耦合程度较高有悖于业务逻辑分离于表现逻辑的原则；在角色管理方面，J2EE采用数据库或者应用服务器来管理角色信息，其中，数据库管理角色的方式增加了应用开发的复杂度，应用服务器管理角色降低了系统的可移植性，两者都具有片面性。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样