利用ASP和SQL Server 2000研究开发的电脑知识赛在线考试系统,它操作简单、使用方便、效率高,实现了在线考试系统的一般功能,包括维护试题,管理考生,随机出题,考试计划维护,考试结果分析,留言板,公告栏等。其特点是实现了考生的断线续...利用ASP和SQL Server 2000研究开发的电脑知识赛在线考试系统,它操作简单、使用方便、效率高,实现了在线考试系统的一般功能,包括维护试题,管理考生,随机出题,考试计划维护,考试结果分析,留言板,公告栏等。其特点是实现了考生的断线续考功能,批量上传试题功能,及手工出题等。展开更多
Based on general packet radio service(GPRS) and TCP/IP protocol,a wireless transmission system of vehicle inspection data is designed. Basic structure and work theory are expounded. SIM300 designed by SIMCOM is used f...Based on general packet radio service(GPRS) and TCP/IP protocol,a wireless transmission system of vehicle inspection data is designed. Basic structure and work theory are expounded. SIM300 designed by SIMCOM is used for client GPRS communication module. Using Winsock control of visual basic(VB),the client and server communication has been accomplished. By means of a client and server communications software,the remote wireless transmission of vehicle inspection data has been accomplished also. The server management software has been developed by using Microsoft SQL Server 2000 and VB6.0. Functions of software include import,inquiry,export and maintenance of test data.展开更多
文摘 1.全文检索及发展
随着大量信息的出现以及计算机存储技术的发展,文献数据库正由书目数据库向全文数据库转变.这一转变使得全文检索技术得到空前的发展.常用的实现全文检索的方法主要有以下两种:第一种方法是不对数据库建立索引而直接对文章进行匹配的方法.这种方法由于没有建立索引库,因此所占空间较少,但同时正是因为它没有索引库,所以在进行全文匹配时要花费大量的时间.第二种方法是一种为全文建立索引的方法.这种方法可以大大节省检索的时间.但同时,这种方法需要占用一定的存储空间来建立索引库.目前,许多研究机构都在进行对全文检索的研究.传统的信息单位,图书馆等也开始建立全文数据库.一些软件公司,也纷纷推出全文检索软件.比较著名的有Microsoft公司开发的SQL Server 2000.……
文摘Based on general packet radio service(GPRS) and TCP/IP protocol,a wireless transmission system of vehicle inspection data is designed. Basic structure and work theory are expounded. SIM300 designed by SIMCOM is used for client GPRS communication module. Using Winsock control of visual basic(VB),the client and server communication has been accomplished. By means of a client and server communications software,the remote wireless transmission of vehicle inspection data has been accomplished also. The server management software has been developed by using Microsoft SQL Server 2000 and VB6.0. Functions of software include import,inquiry,export and maintenance of test data.
