c#写的数据库系统，网上书店，开发环境用的vs2010,sql server 2008，直接运行就能在网页上查看，方便学习-c# write database systems, online bookstores, development environment with vs2010, sql server 2008, run directly can be viewed on the page for easy learning

小型数据库系统，Visual Studio 2008/2010工程，可直接运行，支持SQL语句、建立B+树索引、计算操作时间等功能-Small database system, Visual Studio 2008/2010 project can be run directly support the SQL statement to establish B+ tree index, calculated operation time etc.