mysql-求助以下系统功能的实现
系统mysqljava websql server
系统用户分为4个角色。
4个角色登录后可以看到使用的功能模块各不相同。
角色A使用2个功能：1.查看待安排的任务的列表；2.从待安排任务中选择一个任务并指派给角色B；
角色B使用3个功能：1.查看被A指派的任务的列表；2.选择一个任务填写计划完成的时间；3.填写任务对应的表（可以只是最简单的，可填写的表作为参考）。
角色C使用1个功能：1.查看角色B填写计划完成时间后的任务列表。
角色D使用2个功能：1.查看角色B填写完成的表；2.填写对表的审核意见。
求助如何实现，最好有能完成这些基础功能的工程文件作为参考。
可发我的邮箱guduzhiqiubai@163.com。或者留言搜索关键词后发布到CSDN下载区。
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