Question: In the relation R ( A , B , C , D , E , F , G ) there are the following functional dependencies

In the relation R(A,B,C,D,E,F,G) there are the following functional dependencies : ABC,FBD and GEF. What will be the primary key of this relation?
(Solve the task with closure of attribute sets!)
3 points
In the relation R(A,B,C,D,E,F,G) there are the following functional dependencies :

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