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Consider the following set of relation schemas
STUDENTS (ROLLNO, NAME, DOB, AGE)
ENROLL (ROLLNO, COURSENO)
COURSES (COURSENO, COURSENAME, INSTRUCTOR)
GRADES (ROLLNO, COURSENO, GRADE)
Consider the following FD’s and tell the normal form in which the relations exist.
FD1: DOB →AGE
FD2: NAME →ROLLNO
FD3: ROLLNO →NAME
FD4: COURSENO →COURSENAME
FD5: COURSENO →INSTRUCTOR
FD6: (ROLLNO, COURSENO) →GRADE
FD7: ROLLNO →COURSENO
FD8: COURSENO →ROLLNO
  • a)
    2NF but not in 3NF
  • b)
    3NF but not in BCNF
  • c)
    In BCNF
  • d)
    None of the above
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Consider the following set of relation schemasSTUDENTS (ROLLNO, NAME, ...
(ROLLNO, DOB), (NAME, DOB) and (ROLLNO, COURSENO) are the candidate keys.
The DOB →AGE is a partial dependent FD for the candidate key. So, the relation is in 1NF.
Thus, none of the given options are true.
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Consider the following set of relation schemasSTUDENTS (ROLLNO, NAME, DOB, AGE)ENROLL (ROLLNO, COURSENO)COURSES (COURSENO, COURSENAME, INSTRUCTOR)GRADES (ROLLNO, COURSENO, GRADE)Consider the following FD’s and tell the normal form in which the relations exist.FD1: DOB →AGEFD2: NAME →ROLLNOFD3: ROLLNO →NAMEFD4: COURSENO →COURSENAMEFD5: COURSENO →INSTRUCTORFD6: (ROLLNO, COURSENO) →GRADEFD7: ROLLNO →COURSENOFD8: COURSENO →ROLLNOa)2NF but not in 3NFb)3NF but not in BCNFc)In BCNFd)None of the aboveCorrect answer is option 'D'. Can you explain this answer?
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Consider the following set of relation schemasSTUDENTS (ROLLNO, NAME, DOB, AGE)ENROLL (ROLLNO, COURSENO)COURSES (COURSENO, COURSENAME, INSTRUCTOR)GRADES (ROLLNO, COURSENO, GRADE)Consider the following FD’s and tell the normal form in which the relations exist.FD1: DOB →AGEFD2: NAME →ROLLNOFD3: ROLLNO →NAMEFD4: COURSENO →COURSENAMEFD5: COURSENO →INSTRUCTORFD6: (ROLLNO, COURSENO) →GRADEFD7: ROLLNO →COURSENOFD8: COURSENO →ROLLNOa)2NF but not in 3NFb)3NF but not in BCNFc)In BCNFd)None of the aboveCorrect answer is option 'D'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about Consider the following set of relation schemasSTUDENTS (ROLLNO, NAME, DOB, AGE)ENROLL (ROLLNO, COURSENO)COURSES (COURSENO, COURSENAME, INSTRUCTOR)GRADES (ROLLNO, COURSENO, GRADE)Consider the following FD’s and tell the normal form in which the relations exist.FD1: DOB →AGEFD2: NAME →ROLLNOFD3: ROLLNO →NAMEFD4: COURSENO →COURSENAMEFD5: COURSENO →INSTRUCTORFD6: (ROLLNO, COURSENO) →GRADEFD7: ROLLNO →COURSENOFD8: COURSENO →ROLLNOa)2NF but not in 3NFb)3NF but not in BCNFc)In BCNFd)None of the aboveCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following set of relation schemasSTUDENTS (ROLLNO, NAME, DOB, AGE)ENROLL (ROLLNO, COURSENO)COURSES (COURSENO, COURSENAME, INSTRUCTOR)GRADES (ROLLNO, COURSENO, GRADE)Consider the following FD’s and tell the normal form in which the relations exist.FD1: DOB →AGEFD2: NAME →ROLLNOFD3: ROLLNO →NAMEFD4: COURSENO →COURSENAMEFD5: COURSENO →INSTRUCTORFD6: (ROLLNO, COURSENO) →GRADEFD7: ROLLNO →COURSENOFD8: COURSENO →ROLLNOa)2NF but not in 3NFb)3NF but not in BCNFc)In BCNFd)None of the aboveCorrect answer is option 'D'. Can you explain this answer?.
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