Find centralized, trusted content and collaborate around the technologies you use most.
Teams
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
请看下面的图片。请注意,Job_History 和Employees 表的Employee_ID 是相同的。我如何首先在 c# 代码中表达这一点。这种关系叫什么?我认为是复合的....不确定。
它应该是一对多(employees.employee_Id 到 job_history.employee_id)。