Computer Science Engineering (CSE) Exam > Computer Science Engineering (CSE) Questions > Consider the set of relations given below and...
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Consider the set of relations given 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. RolLnumber = Grades.
RolLnumber
ANDCourse.lnstructor = Korth
AND Courses.Course_number =. Grades. Course_number AND Grades.Grade = A
Which of the following sets is computed by the above query?
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. RolLnumber = Grades.
RolLnumber
ANDCourse.lnstructor = 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.
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Consider the set of relations given below and the SQL query that follo...
The WHERE condition checks for the Grade = ‘A' and matching of course-number in the courses and Grades, where the instructor must be ‘Korth’. Overall it checks for students to whom ‘Korth’ has instructed and they have received Grade = ‘A in atleast one of the courses taught by ‘Korth’.
Most Upvoted Answer
Consider the set of relations given below and the SQL query that follo...
Explanation:
The given SQL query selects the distinct names of students who have received an A grade in at least one course taught by Korth. Let's break down the query and understand it step by step.
1. FROM Students, Courses, Grades
- This clause specifies the tables from which we are fetching the data: Students, Courses, and Grades.
2. WHERE Students.Roll_number = Grades.Roll_number
- This condition joins the Students and Grades tables based on the Roll_number attribute. It ensures that we only consider the records where the Roll_number matches in both tables.
3. AND Courses.Instructor = 'Korth'
- This condition further filters the joined result by only considering the records where the Instructor attribute of the Courses table is equal to 'Korth'.
4. AND Courses.Course_number = Grades.Course_number
- This condition ensures that we only consider the records where the Course_number matches in both the Courses and Grades tables.
5. AND Grades.Grade = 'A'
- This condition further filters the result by only considering the records where the Grade attribute of the Grades table is equal to 'A'.
6. SELECT DISTINCT Name
- Finally, we select the distinct names from the result obtained after applying the above conditions.
Conclusion:
The query retrieves the distinct names of students who have received an A grade in at least one course taught by Korth. Therefore, option C is the correct answer: "Names of students who have got an A grade in at least one of the courses taught by Korth."
The given SQL query selects the distinct names of students who have received an A grade in at least one course taught by Korth. Let's break down the query and understand it step by step.
1. FROM Students, Courses, Grades
- This clause specifies the tables from which we are fetching the data: Students, Courses, and Grades.
2. WHERE Students.Roll_number = Grades.Roll_number
- This condition joins the Students and Grades tables based on the Roll_number attribute. It ensures that we only consider the records where the Roll_number matches in both tables.
3. AND Courses.Instructor = 'Korth'
- This condition further filters the joined result by only considering the records where the Instructor attribute of the Courses table is equal to 'Korth'.
4. AND Courses.Course_number = Grades.Course_number
- This condition ensures that we only consider the records where the Course_number matches in both the Courses and Grades tables.
5. AND Grades.Grade = 'A'
- This condition further filters the result by only considering the records where the Grade attribute of the Grades table is equal to 'A'.
6. SELECT DISTINCT Name
- Finally, we select the distinct names from the result obtained after applying the above conditions.
Conclusion:
The query retrieves the distinct names of students who have received an A grade in at least one course taught by Korth. Therefore, option C is the correct answer: "Names of students who have got an A grade in at least one of the courses taught by Korth."
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Consider the set of relations given 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 NameFROM Students, Courses, GradesWHERE Students. RolLnumber = Grades.RolLnumberANDCourse.lnstructor = KorthAND Courses.Course_number =. Grades. Course_number AND Grades.Grade = AWhich 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.Correct answer is option 'C'. Can you explain this answer? for Computer Science Engineering (CSE) 2025 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about Consider the set of relations given 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 NameFROM Students, Courses, GradesWHERE Students. RolLnumber = Grades.RolLnumberANDCourse.lnstructor = KorthAND Courses.Course_number =. Grades. Course_number AND Grades.Grade = AWhich 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.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the set of relations given 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 NameFROM Students, Courses, GradesWHERE Students. RolLnumber = Grades.RolLnumberANDCourse.lnstructor = KorthAND Courses.Course_number =. Grades. Course_number AND Grades.Grade = AWhich 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.Correct answer is option 'C'. Can you explain this answer?.
Consider the set of relations given 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 NameFROM Students, Courses, GradesWHERE Students. RolLnumber = Grades.RolLnumberANDCourse.lnstructor = KorthAND Courses.Course_number =. Grades. Course_number AND Grades.Grade = AWhich 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.Correct answer is option 'C'. Can you explain this answer? for Computer Science Engineering (CSE) 2025 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about Consider the set of relations given 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 NameFROM Students, Courses, GradesWHERE Students. RolLnumber = Grades.RolLnumberANDCourse.lnstructor = KorthAND Courses.Course_number =. Grades. Course_number AND Grades.Grade = AWhich 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.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the set of relations given 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 NameFROM Students, Courses, GradesWHERE Students. RolLnumber = Grades.RolLnumberANDCourse.lnstructor = KorthAND Courses.Course_number =. Grades. Course_number AND Grades.Grade = AWhich 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.Correct answer is option 'C'. Can you explain this answer?.
Solutions for Consider the set of relations given 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 NameFROM Students, Courses, GradesWHERE Students. RolLnumber = Grades.RolLnumberANDCourse.lnstructor = KorthAND Courses.Course_number =. Grades. Course_number AND Grades.Grade = AWhich 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.Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Computer Science Engineering (CSE).
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Consider the set of relations given 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 NameFROM Students, Courses, GradesWHERE Students. RolLnumber = Grades.RolLnumberANDCourse.lnstructor = KorthAND Courses.Course_number =. Grades. Course_number AND Grades.Grade = AWhich 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.Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Consider the set of relations given 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 NameFROM Students, Courses, GradesWHERE Students. RolLnumber = Grades.RolLnumberANDCourse.lnstructor = KorthAND Courses.Course_number =. Grades. Course_number AND Grades.Grade = AWhich 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.Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Consider the set of relations given 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 NameFROM Students, Courses, GradesWHERE Students. RolLnumber = Grades.RolLnumberANDCourse.lnstructor = KorthAND Courses.Course_number =. Grades. Course_number AND Grades.Grade = AWhich 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.Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
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