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ISRO Computer Science : Databases Quiz
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Question 1
A view of a database that appears to an application program is known as
Question 2
Which of the following is the highest isolation in transaction management?
Question 3
Purpose of ‘Foreign Key’ in a table is to ensure
Question 4
Which of the following contains complete record of all activity that affected the contents of a Databases during a certain period of time?
Question 5
Which of the following statements is TRUE about an SQL query?
A: An SQL query can contain a HAVING clause only if it has a GROUP BY clause.
B: All attributes used in the GROUP BY clause must appear in the SELECT clause.
Question 6
Consider a schema R(A,B,C,D) and functional dependencies A →B and C →D. Then the decomposition of R into R1 (AB) and R2(CD) is
Question 7
Which of the following is TRUE?
Question 8
Which one of the following statements about normal forms is FALSE?
Question 9
Given the basic ER and relational models, which of the following is INCORRECT?
Question 10
Consider the following functional dependencies in a database.
Date_of_Birth →Age,
Age →Eligibility ,
Name → Roll_number,
Roll_number →Name,
Course_number → Course_name,
Course_number →Instructor,
(Roll_number, Course_number) →Grade
The relation (Roll_number, Name, Date_of_birth, Age) is
Date_of_Birth →Age,
Age →Eligibility ,
Name → Roll_number,
Roll_number →Name,
Course_number → Course_name,
Course_number →Instructor,
(Roll_number, Course_number) →Grade
The relation (Roll_number, Name, Date_of_birth, Age) is
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Sep 27GATE & PSU CS
