Information Technologies Deneme Sınavı Sorusu #715255

While mapping ER concepts to relational schemas in logical design, which mapping step entails the insertion of the primary key of one of the entities to the other entity types relation as a foreign key, assuming both entities participate in the same relation?


Mapping of strong entity types.

Mapping of 1:N or N:1 binary relationship types.

Mapping 1:1 binary relationship types.

Mapping n-ary relationship types.

Mapping N:M binary relationship types.


Yanıt Açıklaması:

Using the primary key of one entity and inserting it to the other entity types relation as a foreign key is one of the three possible approaches to mapping 1:1 binary relationship types. The correct answer is C.

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