CL工具讲解 https://www.bilibili.com/video/BV1bTy5Y6E23
数据库文件:https://www.123pan.com/s/SueRTd-BDsfv
业务逻辑整理:https://www.bilibili.com/video/BV15H4y1S7BF
需求快速建库:https://www.bilibili.com/video/BV1MfS7YcEjk
sqlserver库讲解: https://www.bilibili.com/video/BV1oXyiYEEqw
mysql库讲解: https://www.bilibili.com/video/BV1hAy5YVEdx
ACCESS mdb库讲解: https://www.bilibili.com/video/BV1QwyqYGELC