Which of the following possible relations will hold if the above ERD is mapped into a relational model?
Understand the Problem
The question is asking which relations will hold if the provided Entity-Relationship Diagram (ERD) is mapped into a relational model. This involves understanding data structures in database design.
Answer
Person(NID, Name), Exam(ExamID, ExamName), Qualification(NID, ExamID, QualifiedDate).
The relations that will hold are Person(NID, Name), Exam(ExamID, ExamName), and Qualification(NID, ExamID, QualifiedDate).
Answer for screen readers
The relations that will hold are Person(NID, Name), Exam(ExamID, ExamName), and Qualification(NID, ExamID, QualifiedDate).
More Information
In a relational model, an M:N relationship is typically represented by an additional table that includes foreign keys referencing the primary keys of the related entities.
Tips
Ensure all relationships are properly mapped, including foreign keys for n-ary relationships. Don't forget to include relationship attributes in the resulting table.
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