CSCL系统中的数据库技术研究

Research on Database Techniques in CSCL System

针对CSCL(Computer Supported Cooperative Learning,CSCL)系统分布性、实时性、时态性、多角色管理性、群体性的特点,首先分析了其数据管理的主要特征,然后提出了基于JDBC技术的数据库连接方案和基于SQL Server的B/S三层体系数据库结构设计方案,最后对数据库中数据管理、版本维护、会话记录等功能进行了初步设计。

To ensure the CSCL system to operate efficiently, it＇s very important to construct a well-organized database to store all kinds of information in CSCL such as characters, images, and video. Against the characteristics of distribution, real time, multi-roles management, group in CSCL system,This paper firstly analyses the major features of data management. Then the database connection scheme based JDBC technique and the three-tier B/S database structural design scheme based SQL Server are proposed. Finally, the preliminary functional designs of some modules as data management, version maintenance and session records are realized.