Distributed Multi-tier Application Based On Component Technology

A new revolution is springing up quietly in software development presently, which is triggered by increasingly mature Component Technology. Component Technology has brought the object-oriented technology, which was started nearly twenty years ago, into a mature and practical stage.With the development of computer technology and the penetration of its application, the software architecture of applications is continually evolving. Three application models have appeared in sequence as following, Single-tier Application Model, Double-tier Client/Server Application Model and Three-tier Application Model (Distributed Multi-tier Application).There was a climax between the end of 1980s and the middle of 1990s during the development of the method of Object-Oriented Analysis and Design (00A & OOD), and Unified Modeling Language (UML) was an outcome of that climax. UML not only unifies the denotation methods created by Booch, Rumbaugh and Jacobson, but also further develops them and is finally unified as a widely accepted standard modeling language.The present dissertation discusses an enterprise-level application, which is based on the Component Technology sponsored by Microsoft and adopts distributed multi-tier application architecture. In addition, I also try using some UML knowledge to model the system.Chapter 1 is an introduction to the development of softwares, the concept of the object-oriented technology, and the research and objectives to realize in this dissertation.Theoretic knowledge covers from Chapter 2 to Chapter 3. Chapter 2--Componenttechnology and Distributed Multi-tier Application. In the part of Component Technology, COM/DCOM/COM+ Component Technology is introduced, which is sponsored by Microsoft. In the part of Distributed Multi-tier Application, the variation of the architecture of computer systems and the superiorities of three-tierarchitecture are presented. Chapter 3--UML Brief Introduction, is an introductionto the history of the development of UML, its contents, its main features and its application area.Practical Part covers from Chapter 4 to Chapter 9. Chapter 4--Apply UML to Modelthe System, is an introduction to the courses of how to apply UML to model the system and the modeling tool. System Analysis Phase, System Design Phase, System Implementation Phase, System Test Phase and System Configuration Phase are arranged in sequence from Chapter 5 to Chapter 9.