DBMS online test, online practice test, exam, quiz

DBMS Online Test

The purpose of this online test is to help you evaluate your DBMS knowledge yourself. These Multiple Choice Questions (MCQs) on DBMS will prepare you for technical round of job interview, written test and many certification exams.

The test contains 20 questions and there is no time limit. You will get 1 point for each correct answer. You will get your online test score after finishing the complete test.
(Total 20 questions)        (Time spent 0:0)

1. An attribute or combination of attributes in one table whose values must either match the primary key in another table or be null is called __________

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