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.An Edge between a entity set and a binary relationship set can have an associated minimum and maximum cardinality, shown in the form of l and h, where l is the minimum and h is the maximum cardinality. What a Maximum Cardinality value of * indicates?
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Question 2 of 30
Q-2.An entity is represented by set of ___________
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Question 3 of 30
Q-3.A Super keys for which no proper subset is a super key. Such a minimal Super keys are called _______
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Question 4 of 30
Q-4.Which of the following is the Binary Operations?
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Question 5 of 30
Q-5.For example, the customer entity set has an attribute loan-taken, which represents how many loans a customer has from the bank, the attribute loan-taken is______
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Question 6 of 30
Q-6.For a Binary relationship set R between entity sets A and B, the ________ express the number of entities to which another entity can be associated.
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Question 7 of 30
Q-7.Natural join operation is denoted by symbol____
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Question 8 of 30
Q-8.Which of the following take a collection of values and return a single value as a result?
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Question 9 of 30
Q-9.The relational Algebra is a ____________ Query language.
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Question 10 of 30
Q-10.Which of the following operation, denoted by cross (×), allows to combine the information from any two relation.
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Question 11 of 30
Q-11.Diamond Represents______
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Question 12 of 30
Q-12.Which of the following describes the relation name (table name), attributes, and their names?
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Question 13 of 30
Q-13.The Binary operation Union, denoted, as in the set theory by _____
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Question 14 of 30
Q-14.It is convenient at times to write a relational algebra expression by assigning parts of it to temporary relation variables. Which of the following operation will be used for that?
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Question 15 of 30
Q-15.Suppose we want to list all loan numbers and the amount of the loans, but do not care about the branch name. Which of the following operation allows us to produce this relation?
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Question 16 of 30
Q-16.__________is a set of entities of same type that share the same properties or attributes.
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Question 17 of 30
Q-17.A______is a set of relationships of the same type among several entities
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Question 18 of 30
Q-18.If we want to include attributes from two different relations, which of the following operations is needed?
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Question 19 of 30
Q-19.________ is the columns of a table that points to the candidate key of another table.
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Question 20 of 30
Q-20.The select, project and rename operations are called____
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Question 21 of 30
Q-21.Which of the following operation behave just like join operations except on tuples that do not occur in the join results?
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Question 22 of 30
Q-22.Consider an employee entity set with the attribute phone-number, attribute phone-number is a ________
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Question 23 of 30
Q-23.An Edge between a entity set and a binary relationship set can have an associated minimum and maximum cardinality, shown in the form of l and h, where l is the minimum and h is the maximum cardinality. What a minimum Cardinality value of 1 indicates?
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Question 24 of 30
Q-24.______ is the restrictions imposed to maintain the data integrity of the database
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Question 25 of 30
Q-25.Ellipses represent_________
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Question 26 of 30
Q-26.For a binary relationship set R between entity sets A and B,the Mapping Cardinality is ONE TO MANY if
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Question 27 of 30
Q-27.Double Line indicate_____
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Question 28 of 30
Q-28.The Domain relational calculus is a ___________Query Language.
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Question 29 of 30
Q-29.The purpose of the foreign key is to identify a particular row of ___________.
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Question 30 of 30
Q-30.An Edge between a entity set and a binary relationship set can have an associated minimum and maximum cardinality, shown in the form of l and h, where l is the minimum and h is the maximum cardinality. What a Maximum Cardinality value of 1 indicates?
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