VB选课管理系统 VB+ACCESS 是一款简单的小程序，给大家-The VB course management system

网上选课系统的uml设计，使用Java语言通过三层模型实现：数据核心层，业务逻辑层和接入层。-Uml design online course selection system, the use of the Java language to achieve through the three-tier model: Data core layer, business logic layer and access layer.