一 E-R图

E-R图转化为关系表

二 关系表

这里只列出4个关系表。

t_project(project_id,project_name)

t_order(project_id,order_id,data_type,creater,creat_time,end_time,state)

t_workorder(order_id,workorder_id,operator,start_time,end_time,state)

t_workerorder_check(order_id,check_table,business_key,problem_column,problem_column_value,business_rules)

三 转化方法参考

https://blog.csdn.net/chengqiuming/article/details/99168453

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