信息系统，该系统的用户由一般用户和管理员组成，不同的用户拥有不同的权限，各自完成各自的管理功能。首先是欢迎界面，然后选择登录，登录的时候首先要判断用户的身份，合法的用户然后进入到系统主界面中，不同的用户看到不同的系统功能。用sql server2000创建后台数据库，然-Information systems, users of the system composed by the general user and administrator, different users have different permissions, each of their respective management functions. First is the Welcome screen, then select the log, log to determine when the first user' s identity, legitimate user and then enter the main interface to the system, different users see different system functions. Background database created with sql server2000, Ran