Description: 系统概要:
本系统采用VB.NET开发.
开发平台:Windows XP Professional SP2 (English Version)
开发环境:Visual Studio .NET 2003 Professional (English Version)
运行环境:.NET Framework 1.1 以上，AutoCAD考试系统
AutoCAD 2000 以上
主要涉及技术:VB.ENT , Web Services , XML, ADO.NET.多线程技术.
模型优点:
1. 很好地解决了以往的考试系统，服务器仅能在局域网内设置的缺点.
2. 充分利用Web Services 的优点.解决了考试结束时,考生同时交卷产生的网络拥挤问题.
3. 减少了数据库操作，提高了系统的吞吐量
4. 系统可以采用分布式构架,提高性能.(如上图)
系统特点:
1. 系统针对AutoCAD的特点,在选择题和填空题的基础上,设置了作图题.
2. 系统自动定时将考生的考试题保存到服务器上，有效防止考试过程中可能出现的死机，以及安装有还原卡的主机重启问题.
3. 系统可能设置随机抽题和固定抽题．
4. 系统可以实现考场的安排，和考生试安排，可以设置随到随考或固定时间
5. 系统数据库自动备份,
6. 系统交卷启用事务处理,确保试题上交成功.-system summary : The system uses VB.NET. Development platform : Windows XP Professional SP2 (English Version) Development environment : Visual Studio.NET 2003 Professional (English Version) Operating environment :.NET Framework 1.1 and above. AutoCAD AutoCAD 2000 test system above the main technical : VB.ENT. Web Services, XML, ADO.NET. Multithreading technology. Model advantages : 1. good solution to the previous examination system, caught in the LAN server to set up the shortcomings. 2. fully utilize the advantages of Web Services. solved Examinations at the end of the candidates before the report while the network congestion problem. 3. reduction of database operation, improve the system throughput 4. Distributed systems architecture can be used to improve performance. (As Chart) syst Platform: |
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