Encryption-Decryption
September 26, 2024Computer-Networks
September 29, 2024Database-Management-System
| Question 890 |
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.Roll_number = Grades.Roll_number
AND Courses.Instructor =Sriram
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.Roll_number = Grades.Roll_number
AND Courses.Instructor =Sriram
AND Courses.Course_number = Grades.Course_number
AND Grades.Grade = A
Which of the following sets is computed by the above query?
| Names of Students who have got an A grade in all courses taught by Sriram | |
| Names of Students who have got an A grade in all courses | |
| Names of Students who have got an A grade in at least one of the courses taught by Sriram | |
| None of the above |
Question 890 Explanation:
→ The query results a names of students who got an A grade in at least one of the courses taught by Sriram.
→ The above query they are using AND command, it means it satisfy all conditions.
→ The above query they are using AND command, it means it satisfy all conditions.
Correct Answer: C
Question 890 Explanation:
→ The query results a names of students who got an A grade in at least one of the courses taught by Sriram.
→ The above query they are using AND command, it means it satisfy all conditions.
→ The above query they are using AND command, it means it satisfy all conditions.
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