The universal design solution for Ajax-based three-tier architecture

Ajax-based technology plays an important role in RIA (rich internet application). Meanwhile, Ajax-based three-tier architecture is a classic architecture in software development industry. Study shows that the data access layer and the business logic layer can be designed as universal modules and the presentation layer can be divided into specific module and universal module. As universal module is reusable, developers can find out the universal design solution for Ajax-based three-tier architecture in order to increase development efficiency.