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Database Management System (DBMS) MCQs | Page - 42

Dear candidates you will find MCQ questions of Database Management System (DBMS) here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

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Mr. Dubey • 51.17K Points
Coach

Q. 411) In the schema (dept name, size) we have relations total inst 2007, total inst 200Q:8) Which dependency have lead to this relation ?

(A) Dept name, year->size
(B) Year->size
(C) Dept name->size
(D) Size->year
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Mr. Dubey • 51.17K Points
Coach

Q. 412) Relation dept year(dept name, total inst 2007, total inst 2008, total inst 2009). Here the only functional dependencies are from dept name to the other attributes. This relation is in

(A) Fourth NF
(B) BCNF
(C) Third NF
(D) Second NF
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Mr. Dubey • 51.17K Points
Coach

Q. 413) Thus a _______ of course data gives the values of all attributes, such as title and department, of all courses at a particular point in time.

(A) Instance
(B) Snapshot
(C) Both Instance and Snapshot
(D) All of the mentioned
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Mr. Dubey • 51.17K Points
Coach

Q. 414) Representations such as the in the dept year relation, with one column for each value of an attribute, are called _______ they are widely used in spreadsheets and reports and in data analysis tools.

(A) Cross-tabs
(B) Snapshot
(C) Both Cross-tabs and Snapshot
(D) All of the mentioned
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Mr. Dubey • 51.17K Points
Coach

Q. 415) Data Model is collection of conceptual tools for describing -

(A) Data
(B) All of these
(C) Data Schema
(D) Consistency Constaints
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Mr. Dubey • 51.17K Points
Coach

Q. 416) Data Models in DBMS are classified into ______ categories.

(A) 3
(B) 2
(C) 5
(D) 4
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Mr. Dubey • 51.17K Points
Coach

Q. 417) Object based logical model(s) are used to describe data at - [Select Appropriate Option(s)]

(A) View Level
(B) Logical Level
(C) Physical Level
(D) None of these
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Mr. Dubey • 51.17K Points
Coach

Q. 418) Which of the following is example of Object based logical model ?

(A) Relational Model
(B) Hierarchical Model
(C) Network Model
(D) Entity Relationship Model
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Mr. Dubey • 51.17K Points
Coach

Q. 419) Entity Relationship model consists of collection of basic objects called _________ and relationship among these objects.

(A) functions
(B) models
(C) None of these
(D) entities
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Mr. Dubey • 51.17K Points
Coach

Q. 420) Which of the following gives a logical structure of the database graphically?

(A) Entity-relationship diagram
(B) Entity diagram
(C) Database diagram
(D) Architectural representation
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