The Design Strategy of Component Method in Three-Tier Architecture

The design of class in the different layer is one of the most important works in software development based on three-tier architecture, however, the methods of component are the core of class and the characters of the function (component method) in different layer are different so to find out these characters and to form the design strategy of component method called function in this paper is very necessary. This paper gives not only the design strategy of function parameter but also the design strategy of function return value through the analysis of examples based on three-tier architecture. These conclusions provide an important guide for the detail design of component method in three-tier architecture.