tykiabrown4207 tykiabrown4207

13-05-2023
Engineering

contestada

If a 1:M relationship is optional on the 1 side and mandatory on the M side, which of the following is true?
The resulting foreign key can have null (empty) values
The resulting foreign key cannot have null (empty) values
The resulting foreign key must have null (empty) values
No foreign key is created as a result of mapping such a relationship

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