12th Class Computer Science MCQS Chapter 3

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12th Class Computer Science MCQS


A file is stored in:
Hard disk
ROM
RAM
Cache

An entity related to itself in an ERD model refers to :
Recursive relationship
One-to-one relationship
One-to-many relationship
Many-to-many relationship

Organizing the database in computer disk storage is done in:
Implimentation
Logical design
Physical design
Analysis

Conditional operator is alternative of:
If-else
If
None of these
Nested if-else

Format specifier starts with the symbol
%
*
all
#

In ERD model, the relationship between two entities is represented by a
diamond symbol
rectangular box
line
oval symbol

Which of the following is basic data distribution strategy?
Partitioned
All
Centralized
Replication

Which of the following keys us not unique:
Forein key
Secondary key
Primary key
Candidate key

A person’s name, birthday and social security number are examples of:
Entities
Descriptors
Attributes
Relationships

Which of the following activities are involved in data analysis?
All
Data flow diagram
Decision Tables
Decision Trees

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