## Discussion Forum

Que. | Consider the set of relations shown below and the SQL query that follows.
Students: (Roll_number, Name, Date_of_birth) Courses: (Course number, Course_name, Instructor) Grades: (Roll_number, Course_number, Grade) select distinct Name from Students, Courses, Grades where Students. Roll_number = Grades.Roll_number and Courses.Instructor = Korth and Courses.Course_number = Grades.Course_number and Grades.grade = A Which of the following sets is computed by the above query? |

a. | Names of students who have got an A grade in all courses taught by Korth |

b. | Names of students who have got an A grade in all courses |

c. | Names of students who have got an A grade in at least one of the courses taught by Korth |

d. | None of the above |

Answer:Names of students who have got an A grade in at least one of the courses taught by Korth |