Question

Suppose the relationship between Instructors and his/her Qualifications. Which of the followings is correct?

Select one:
a. This relationship is supporting relationship from Instructors to Qualifications
b. Qualifications is a weak entity set with supporting relationship from Instructors
c. This relationship is many-one from Qualifications to Intructors
d. All of the others

Answer 1

The relationship between instructors and qualifications is a supporting relationship, with qualifications being a weak entity set.

Step-by-step explanation:

The correct answer is b. Qualifications is a weak entity set with supporting relationship from Instructors.

In a database design, a weak entity set is an entity set that does not have sufficient attributes to form a primary key. In this case, the qualifications of an instructor are dependent on the instructor themselves, so the qualification entity set is a weak entity set. The relationship between instructors and qualifications is a supporting relationship because the qualifications rely on the instructors.

In summary, the correct answer is b. Qualifications is a weak entity set with supporting relationship from Instructors.