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Online Tests
Computer Science Ics Part 2 Chapter 3 Online Test MCQs With Answers
Question # 1
Every relation must have:
Choose an answer
Primary key
Candidate key
Secondary key
All of these
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Question # 2
Which of the following keys us not unique:
Choose an answer
Candidate key
Forein key
Primary key
Secondary key
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Question # 3
Which is used to display yes/no values:
Choose an answer
Check box
Option buttons
Both a & b
None of these
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Question # 4
Which of the following represents the entities?
Choose an answer
Teacher
Student
Aero plane
All
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Question # 5
A \t is used for:
Choose an answer
New line
Tab
Back space
None of these
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Question # 6
Which of the following key does not hold uniqueness property ?
Choose an answer
candidate key
foreign key
primary key
Secondary key
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Question # 7
A factor to consider when choosing a file organization is:
Choose an answer
Fast retrieval
Security
Efficient storage
All
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Question # 8
An advantage of partitioning is:
Choose an answer
Efficiency
Extra space
Reliabilty
Accuracy
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Question # 9
Which of the following activities are involved in data analysis?
Choose an answer
Data flow diagram
Decision Tables
Decision Trees
All
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Question # 10
In ERD model, the relationship between two entities is represented by a
Choose an answer
diamond symbol
rectangular box
oval symbol
line
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Question # 11
Which of the following is used to associate entities with one another?
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Entity
Attribute
Identifier
Relationship
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Question # 12
Escape sequence starts with the character
Choose an answer
%
/
#
none
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Question # 13
A file is stored in:
Choose an answer
RAM
ROM
Cache
Hard disk
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Question # 14
Which of the following is a valid format specifier
Choose an answer
%10d
%7.2f
%-7f
all
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Question # 15
Relationship are
Choose an answer
uni-directional
bi-directional
tri-directional
none of these
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Question # 16
All of the following are components of physical database design EXCEPT:
Choose an answer
Data volume and usage anylisis
Data distribution strategy
File organization
Normalize the relations
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Question # 17
The relationship can be:
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One-to-one
One-to-many
Many-to-many
All
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Question # 18
An entity related to itself in an ERD model refers to :
Choose an answer
Recursive relationship
One-to-many relationship
Many-to-many relationship
One-to-one relationship
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Question # 19
An attribute is also known as:
Choose an answer
Table
Field
Row
Relation
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Question # 20
A technique for physically arranging the records of a file on secondary storage devices is called:
Choose an answer
Physical pointer
Retrieval program
File organization
Update program
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Question # 21
An entity related to itself in an ERD model refers to
Choose an answer
recursive relationship
one-to-many relationship
many to many relationship
on to one relationship
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Question # 22
A person's name, birthday and social security number are examples of:
Choose an answer
Attributes
Entities
Relationships
Descriptors
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Question # 23
Data type int contain bytes:
Choose an answer
10
4
2
1
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