Is this dataset in $1$NF or not? If not, why not?StudentNumber

StudentName

Major

CourseNumber

CourseName

InstructorNumber

InstructorName

InstructorLocation

Grade

a$.)$

Yes, this dataset is in $1$NF$.$

b$.)$

No$,$ only because there are repeating groups.

c$.)$

No$,$ only because there is no primary key indicated.

d$.)$

No$,$ because there are repeating groups and there is no primary key indicated.