ECAT Computer Science MCQS Set 7

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ECAT Computer Science MCQS Page 4


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

Which of the following key does not hold uniqueness property ?
Secondary key
candidate key
foreign key
primary key

A factor to consider when choosing a file organization is:
All
Fast retrieval
Security
Efficient storage

A file is stored in:
Hard disk
RAM
ROM
Cache

Which key does not have uniqueness property?
Foreign key
Candidate
Primary key
Secondary key

Optional is represented by
0
1
2
none of these

Types of translators are:
All of these
Compiler
Interpreter
Assembler

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

A data model is :
All
A logical representation of the structure of the database
Shown as an entity-relationship diagram
Transformed into tables and relationships

An entity related to itself in an ERD model refers to
recursive relationship
one-to-many relationship
many to many relationship
on to one relationship

Object used to retrieve data from database is called:
Queries
Forms
Repons
Tables

The relationship can be:
All
One-to-one
One-to-many
Many-to-many

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