添加和删除歌手信息及所唱歌曲，编辑和删除指定的歌曲信息，快速查询歌曲或歌手。使用的是access数据库，参考学习的好例子。-Add and remove singer information and singing songs, edit, and delete the specified song information, fast query song or singer. Use is a good example of the access database, reference stu