python - SQLAlchemy如何设置外键却不加约束来使用关系？

Question

就是写关系的时候必须要在属性上加有ForeignKey，但是能不能不加约束，仅仅指定外键就使用SQLAlchemy的relationship？

Answer 1

Since you don’t need constraints, why do you need foreign keys? ? ? Just set a field to store the corresponding relationship

Answer 2

Adding foreign keys can maintain data integrity, and you can also set up relationships yourself. That kind of control is easy to use

Answer 3

In Python, you can use properties directly instead of foreign keys, but you need to do more work yourself