管理信息系统中SQL SERVER触发器之妙用简

分析了SQL SERVER数据库中触发器技术,以实际应用的管理信息系统为例,阐述了触发器的功能和具体应用.在实际的学生成绩管理系统中设置Update触发器、Insert触发器以及Delete触发器.起到了后台数据库必更新、插入、删除数据时,维护数据库的数据完整性的作用.实践证明,触发器是维护数据库数据完整性的有效方法.     

SQL Server约束在维护数据完整性中的运用

本文介绍了SQLServer数据库中数据完整性的概念和分类,探讨了SQLServer在数据库设计中如何运用约束来维护数据完整性的方法。     

数据完整性约束的应用

在数据库系统中,数据完整性问题会影响数据库正常使用。因此必须建立完整性约束机制。本文探讨数据完整性约束及其如何实现,并以SQL Server和PowerBuilder为平台,介绍了数据完整性约束的应用技术。     

基于C/S模式数据完整性约束的实现

阐述了在Client/Server模式上实现数据完整性约束的方法,并以SQL Server为例,讨论了数据完整性约束的实现技术。     

基于MS SQL Server的MIS中数据完整性约束的分析与设计

讨论了基于C/S模式应用系统数据库中几种常用的数据完整性约束技术,并基于MS SQL Server数据库,设计了数据完整性约束的实现方法.     

图书管理系统中数据完整性的实现

数据完整性是数据库应用系统评价中的一个重要指标。以图书管理系统为例阐述了实现数据完整性的必要性和实现方法。该系统是以V B为编程工具,以SQ L Server作为数据库管理系统的。     

高校教务管理系统中课程数据完整性问题探讨

课程作为教务管理系统中最重要的基础数据,其完整性对整个系统的数据管理质量和运行效果影响重大。本文针对课程数据完整性的有关问题,诠释了课程数据完整性的基本内涵,探究了课程数据完整性受到破坏的主要原因,并提出了保证课程数据完整性的一些对策。     

高校教务管理系统中课程数据完整性问题探讨

课程作为教务管理系统中最重要的基础数据。其完整性对整个系统的数据管理质量和运行效果影响重大。本文针对课程数据完整性的有关问题,诠释了课程数据完整性的基本内涵,探究了课程数据完整性受到破坏的主要原因。并提出了保证课程数据完整性的一些对策。     

数据库应用系统的数据完整性保护方法

介绍了数据完整性的概念，类型以及数据库应用系统实施数据完整性保护的几种方法，并给出了实施数据完整性保护的实例。     

基于VFP的管理信息系统数据完整性控制方法探讨

数据完整性约束是数据库系统设计中的一个重要问题。通过对数据库数据完整性概念、原理的分析,说明数据库应用系统设计中实现数据完整性的重要意义,提出在基于VFP的管理信息系统中实现数据完整性控制的方法。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

库克斯顿城堡

城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!     

The Reader Response Approach to Teaching of English Literature

During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context.