UGC-NET | UGC NET CS 2014 Dec – II | Question 18
What kind of mechanism is to be taken into account for converting a weak entity set into strong entity set in entity-relationship diagram?
(D) Adding suitable attributes
Explanation: Weak entity is an entity which does not have sufficient attributes to form a primary key.
Weak entity is represented by Double rectangle In an ER Diagram.
It must be in a 1:M relation.
A member of a weak entity is called a subordinate entity.
For converting a weak entity set into strong entity set in entity-relationship diagram by simply adding appropriate attributes.
So, option (D) is correct.
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