基于.net平臺orm技術(shù)的研究與應(yīng)用

1、上海交通大學(xué)碩士學(xué)位論文基于.NET平臺ORM技術(shù)的研究與應(yīng)用姓名：張彥歆申請學(xué)位級別：碩士專業(yè)：軟件工程指導(dǎo)教師：王東;侯文永20090501基于.NET 平臺 ORM 技術(shù)的研究與應(yīng)用 2 RESEARCH AND APPLICATION OF ORM TECHNOLOGY BASED ON .NET PLATFORM ABSTRACT Nowadays, object-oriented matheds of design and

2、coding is popularly used in research and development of softwares. More complicated the system business and scale is, more complicated the design of inner objects and the storage logic of relational data are, go with whi

3、ch the business information transfering between object and relation relative in OO design and development becomes more and more difficult. ‘Unmatched impedance’ between object model and relation model can directly lead t

4、o the problems like reducing the developing and maintaining efficiency of system. Add persistent layer into the system structure is an efficient method to deal with above problem, and ORM (Object-Relation Mapping) is a

5、technology to constructe persistent layer directed at OO system. With the OO methods being popularly used, software developers and users are attaching more and more importance to ORM technology. By now, there have been d

6、ifferent kinds of ORM application frameworks respectively based on JAVA and .NET platform. But generally speaking, the ones based on .NET platform are comparatively immature, and most frameworks that created to meet need

7、s of general system structure are aimed at commercial value, which make themselves hard to use going with the boom of developing cost. So the ORM frameworks have not been popularly used in market by now. This paper will

8、 design a lightly-weight ORM persistent layer based on .NET platform with good expansibility and flexibility, and will applicate it into the development of KTMS (Kerry EAS Transportation Management System), so that the f

9、ormer condition that the object model and relation model impact each other seriously, one changed with the other must be changed in large scale, can be improved. ORM persistent layer is also created to meet MVC structure

10、. It effectively depart the business part from the relation data part in system so that improves the former ‘Model’ pattern in MVC. And it also does improvement in reducing the coding work while .NET uses tranditional AD

11、O.NET methods to read database should code much more. ORM also makes it easy to maintain and reuse the system as well as boosting the development efficiency. In the process of project research and development, paper cons