基于.net的企業(yè)級分布式系統(tǒng)多層架構(gòu)的研究與應(yīng)用

1、重慶大學(xué)碩士學(xué)位論文基于.NET的企業(yè)級分布式系統(tǒng)多層架構(gòu)的研究與應(yīng)用姓名：王遠(yuǎn)斌申請學(xué)位級別：碩士專業(yè)：計算機(jī)軟件與理論指導(dǎo)教師：王成良20050501重慶大學(xué)碩士學(xué)位論文IIABSTRACTIn the course of software development, the architecture design of software systemplays a key role all the time. As for larg

2、e enterprise application, System architecture caninfluence not only system design and progress of development, but also systematicfollow- up development directly. It can even determine whether the whole systemdevelopment

3、 is successful. The traditiona1 C/S model has been popular for a long time.It ever was a successful solution to enterprise computer. However Since 1990s， With theapplication on Internet becoming more and more widely and

4、Internet technology beingmore and more advanced，the tradition C/S model appears obviously not to meet thedevelopment requirement of modern enterprise application. The original computerarchitecture has developed from the

5、2- tier architecture to the N- tier architecture.Currently, because of its obvious advantages, N- tier architecture has already become astandard of structuring enterprise application. However, at present, the enormous an

6、dcomplex N- tier architecture has some problems, such as low efficiency of development,being difficult to be transplanted, updated and reused.This paper analyses the disadvantages of N- tier architecture currently and pu

7、tsforward a new N- tier architecture: an Entity- Layer is given out that maps objects topersistence mechanisms in such a manner that simple changes to the relational schemado not affect your object- oriented code. A Pers

8、istence- Layer is added to build SQLsentence automatically. The advantage of this approach is that application programmersdo not need to know any thing about the schema of the relational database. Theapplication shows th

9、at the new N- tier architecture can well persistence the objects，thatthe mismatch between object- oriented and relational database is eliminated for themost ， that independency between object- oriented and relational dat