An e-Learning System Based on GWT and Berkeley DB

Google Web Toolkit (GWT) and Berkeley DB Java Edition's (BDJE) are two frameworks that they are both designed easy to use. In all stages of application development, they focus on eliminating common, usually considered overhead. In this paper, a kind of hierarchical and extensible e-Learning system framework is constructed according to this characteristic. The client-side is provided with widget support based on Ajax by using GWT, and BDJE is responsible for managing the persistent data of server-side. The framework not only reduces the cost during the development stage of e-Learning system and provides ideas to get rid of Object-Relational Mapping (ORM) thinking mode depended by the developers, but effectively improves the real-time requirements and human-computer interaction experience of e-Learning system.