With each visit of this Database Management System online Quiz / Practice Test, the list of MCQs / Objective Questions presented will be different, offering you a diverse set of practice opportunities. This variability encourages you to practice extensively, refining the accuracy of your answers and your overall grasp of the content. By utilizing this resource, you can hone your skills and become more adept at managing time constraints during actual exams.
Test Instructions Question type Randomized MCQs.Changes every time you visit the test Total Number of Questions 30 Time Limit 20 Minutes Points 1 Point for each Question
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Question 1 of 30
Q-1.Which of the following is another name for weak entity?
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Question 2 of 30
Q-2.In case of entity integrity, the primary key may be
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Question 3 of 30
Q-3.The statement in SQL which allows to change the definition of a table is
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Question 4 of 30
Q-4.Which of the following operations need the participating relations to be union compatible?
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Question 5 of 30
Q-5.Which of the following is a legal expression in SQL?
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Question 6 of 30
Q-6.A primary key is combined with a foreign key creates
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Question 7 of 30
Q-7.An instance of relational schema R (A, B, C) has distinct values of A including NULL values. Which one of the following is true?
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Question 8 of 30
Q-8.The full form of DDL is
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Question 9 of 30
Q-9.A set of possible data values is called
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Question 10 of 30
Q-10.The relational model feature is that there
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Question 11 of 30
Q-11.The method in which records are physically stored in a specified order according to a key
field in each record is
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Question 12 of 30
Q-12.Which of the following operation is used if we are interested in only certain columns of a
table?
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Question 13 of 30
Q-13.A subschema expresses
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Question 14 of 30
Q-14.A relational database developer refers to a record as
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Question 15 of 30
Q-15.The conceptual model is
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Question 16 of 30
Q-16.The database schema is written in
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Question 17 of 30
Q-17.In a Hierarchical model records are organized as
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Question 18 of 30
Q-18._________ is a virtual table that draws its data from the result of an SQL
SELECT statement.
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Question 19 of 30
Q-19.In E-R Diagram derived attribute are represented by
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Question 20 of 30
Q-20.It is better to use files than a DBMS when there are
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Question 21 of 30
Q-21.Which of the operations constitute a basic set of operations for manipulating relational
data?
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Question 22 of 30
Q-22.Which of the following is another name for weak entity?
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Question 23 of 30
Q-23.Count function in SQL returns the number of
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Question 24 of 30
Q-24.Which database level is closest to the users?
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Question 25 of 30
Q-25.The full form of DDL is
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Question 26 of 30
Q-26.Which of the following database object does not physically exist?
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Question 27 of 30
Q-27.The property / properties of a database is / are :
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Question 28 of 30
Q-28.Which of the following database object does not physically exist?
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Question 29 of 30
Q-29.A primary key if combined with a foreign key creates
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Question 30 of 30
Q-30.E-R model uses this symbol to represent weak entity set ?
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