Study On Three-Tier Architecture Applications

Three-tier architecture distributes an application across a number of clients and servers through application partitioning in order.to maximize the performance and scalability of the system î–¹ a whole. The widespread adoption of Internet has pushed enterprise applications tb evolve from the traditional two-tier client/server architecture to the three-tier architecture using WWW technologies. In recent years, the rapid development of object-oriented technologies and distributed computing technologies, and the high demand of software reuse, have led to the Component Based Software Development. Component technologies have solved the problems native to building three-tier architecture applications using WWW technologies, and provide ideal development and deployment platform for three-tier architecture applications. Building three-tier architecture applications using component technologies is' the right direction for the development of software development methodology.This paper discusses the construction of three-tier architecture applications using WWW technologies and component technologies respectively, and specifically for building three-tier architecture applications using CORBA component model, analyze the semantics of passing CORBA objects as the parameter of remote method invocations. A tool has been created to implement passing CORBA objects completely, including their state and behavior.