论文标题:分布式技术在ERP系统中的研究与应用 Application of Fractal Technology to the Measurement of Gas-Solid Fluidization 论文作者 敬龙江 论文导师 范锐,论文学位 硕士,论文专业 计算机应用 论文单位 西南石油学院,点击次数 121,论文页数 77页File Size5428k 2002-04-01论文网 http://www.lw23.com/lunwen_252190457/ ERP;分布计算;C/S;三层结构;COM/DCOM;中间件;IDEF1X;模型设计 ERP,Distributed Computing,C/S,3-tier Architecture,COM/DCOM,Middleware,IDEF1X,model design 本文第一部分介绍了企业资源规划(ERP)的基本概念及其发展历程,并阐明了ERP的基本原理和开发方法。接着以ERP系统中的销售管理子系统为例,详细阐述了这部分的管理业务、系统功能和具体开发方式。本文第二部分对近20年来影响计算技术发展的最活跃因素之一分布计算技术作了分析,它一方面用到面向对象技术,另一方面又对传统对象模型有很大的影响。本文第三部分介绍了C/S计算模型,概括了两层C/S模型的优点及存在的缺陷,以此引入了三层C/S模型。接着分析了三层C/S模型的体系结构,并分别以Microsoft制定的COM/DCOM结构模型,OMG提出的CORBA结构模型,SUN制定的EJB结构模型三种不同的技术方式来探讨三层结构的实现技术。最后,本文结合中国某油气田分公司输气公司的天然气营销管理信息系统开发的实例,从系统模型设计、后台数据库服务器设计、客户端和应用服务器设计给出了基于COM/DCOM组件技术的三层数据库结构开发的全过程。 With the development of Internet and E-business, it becomes moreand more important for the enterprise to develop Enterprise Resource Planning. Firstly, this paper gives the concept of Enterprise Resource Planning, and the course of its development, clarifies the fundamental and the exploitation of ERP. Then taking the sell manage system as example, this paper clarifies the manage operations, system functions and particular exploitation of this part. Secondly, this paper analyses the Distributed Computing technique that is one of the most active factor of infection the advancement of the Computing technique. Thirdly, this paper summarizes the advantages and disadvantages of 2-tier C/S model. Then, this paper introduces the architecture of 3-tier model and three different methods that include the COM/DCOM structure model of Microsoft and the CORBA structure model of OMG and the EJB structure model of SUN to achieve 3-tier structure. At last, an example is given to explain how to develop the sell manage system of ERP system using COM/DCOM technique in the 3-tier model.
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