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- three database theory 三库理论
- This paper deals with the semantics of null values in functional dependencies in database theory, and presents three different definitions of FDs in a single relation with marked nulls. 本文研究关系数据库理论中空值在函数依赖中的语义问题,提出了带标志空值的关系中函数依赖的三种定义。
- Hao Zhongxiao, born in 1940. He is a professor and doctoral supervisor. His main research interests include database theory and application. 郝忠孝,1940年生,教授,博士生导师,主要从事数据库理论及应用研究。
- Acyclic database scheme designing is a new research field in relational database;it combines database theory with graph theory. 在关系数据库中,无环数据库模式设计是数据库理论与图论相结合而产生的一个新的研究领域。
- It involves using either two or three database servers running on separate computers and communicating with each other in either synchronous or asynchronous mode. 他专用于两个或三个数据库运行于不同分离的计算机,工作于同步或异步方式。
- Descriptions of the audit records generated by the three database utilities dblog, dbtran, and dbwrite in the. Alg file appear in Auditing of database utilities. 由dblog、dbtran和dbwrite三个数据库实用程序在.;alg文件中生成的审计记录将在审计数据库实用程序部分说明。
- The topic is about the development of medical information management system which is used ASP technology , network database theory, and based on B/S model. 运用ASP技术和网络数据库原理,基于B/S模式而开发的体检信息管理系统。
- At present, VB language program designing is widely used in database development. On this point, the essay discusses the application of three database accessing modes in VB. 摘要本文主要针对当前广泛应用的VB程序设计语言对数据库开发的支持,讨论了VB中三种数据库访问方式的不同应用。
- This status request lists two or three databases as required responders. 此状态请求列出了两个或三个数据库作为必要响应方。
- Functionally, the SCADA system should be provided with at least three databases,namely,real-time database, historical database and relational database. 文章介绍了在面向工业控制过程的实时监控系统建设中,实时数据库系统的设计。
- After several weeks of Internet searching, I found and bought three databases of foreign translation agencies.One of them was compiled by Alex Eames (www.translatortips.com). 而在另外一些公司,翻译工作是交给秘书来做的,即那些长着修长大腿的姑娘们。
- He trudge three hour in the snow to get back home. 他在雪中跋涉三个钟点才回到家。
- Our family reunions are always three ring circus. 我家合家团聚的场面总是热闹非凡。
- The train arrived on the dot of three o'clock. 那辆火车三点钟准时到达。
- Her family lives three li away from her school. 她家住在离学校有三里路的地方。
- We spied three figures in the distance. 我们望见远处有三个人影儿。
- The earthwork was cast up in three hours. 土方工程在三小时内就完成了。
- It's three blocks straight ahead. 一直往前走过三个街区就是。
- The investigator will be divided into three groups. 所有的调查员将被分为三个小组。
- A standard and excellent reference for learning relational database theory is 学习关系数据库理论的权威及卓越的参考资料是