12th Class ICS Computer Science Online MCQ Test for (Data Base Process)

• mendatory A
• optional B
• may be many C
• none of theses D

Which is used to display yes/no values:

• Check box A
• Option buttons B
• Both a & b C
• None of these D

All of the following are components of physical database design EXCEPT:

• Data volume and usage anylisis A
• Data distribution strategy B
• File organization C
• Normalize the relations D

Which of the following is basic data distribution strategy?

• Centralized A
• Partitioned B
• Replication C
• All D

Relationship are

• uni-directional A
• bi-directional B
• tri-directional C
• none of these D

Every relation must have:

• Primary key A
• Candidate key B
• Secondary key C
• All of these D

The function clrscr ( ) is defined in

• stdio.h A
• math.h B
• canio.h C
• graphic.h D

A factor to consider when choosing a file organization is:

• Fast retrieval A
• Security B
• Efficient storage C
• All D

Data type int contain bytes:

• 10 A
• 4 B
• 2 C
• 1 D

A \t is used for:

• New line A
• Tab B
• Back space C
• None of these D

Which of the following escape sequence is used for beep

• /a A
• /b B
• /t C
• /n D

An entity related to itself in an ERD model refers to :

• Recursive relationship A
• One-to-many relationship B
• Many-to-many relationship C
• One-to-one relationship D

Which of the following is used to describe the characteristics of an object?

• Attribute A
• Relationship B
• Cardinality C
• Modality D

An index may be created on:

• Primary key A
• Secondary key B
• Foreign key C
• All D

In a relational database a single piece of information is called:

• Table A
• Record B
• Entity C
• Attribute D

Format specifier starts with the symbol

• # A
• % B
• * C
• all D

Which of the following key does not hold uniqueness property ?

• candidate key A
• foreign key B
• primary key C
• Secondary key D