mysql - Foreign Key in SQL pivot table - database design -

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i using dbdesigner 4 designing database relations.

i have users table , recipes table. 1 user can own many recipes 1 recipe cannot owned many users. relationship shown user_recipes relation in picture. (a one-to-many relationship users recipes).

however, recipes can liked users. many users can many recipes. many-to-many relationship between users , recipes , pivot table users_like_recipes.

but when create pivot table, need users_id , recipes_id column. recipes_users_id column getting added on own , not able remove it. says third column has come relation defined in model. guess user_recipes relation.

when remove user_recipes relation, pivot table want to.

but need user_recipes relation too!

please. appreciated.

i suggest removing user_id primary key from recipes table. combination if id , user_id provides identification recipes table. in situation multiple user_id's can create same recipe id because combination has unique. user_id can normal column in table. if want to, can make alternate key on (id, user_id) not need because id unique.


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