Which of the following set should be associated with weak entity set for weak entity to be meaningful?a) Neighbour setb) Strong entity setc) Owner setd) Identifying set
Question
Which of the following set should be associated with weak entity set for weak entity to be meaningful?a) Neighbour setb) Strong entity setc) Owner setd) Identifying set
Solution
The set that should be associated with a weak entity set for the weak entity to be meaningful is the "Identifying set".
Here's why:
A weak entity is an entity that cannot be uniquely identified by its attributes alone; therefore, it must rely on some other entity (the identifying or owner entity). The relationship between the weak entity and the identifying entity is called the identifying relationship.
So, the weak entity is dependent on the identifying set (which is typically a strong entity set) to ensure its existence and uniqueness. Therefore, the correct answer is d) Identifying set.
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