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

An entity related to itself in an ERD model refers to

• recursive relationship A
• one-to-many relationship B
• many to many relationship C
• on to one relationship D

Relationship are

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

A person's name, birthday and social security number are examples of:

• Attributes A
• Entities B
• Relationships C
• Descriptors D

The number of variables that can be used in printf ( ) function are

• one A
• many B
• three C
• zero D

In an E-R diagram, a rectangle represents:

• Entity A
• Attributes B
• Relationship C
• None D

Which of the following is a valid format specifier

• %10d A
• %7.2f B
• %-7f C
• all D

An attribute is also known as:

• Table A
• Field B
• Row C
• Relation D

Which of the following is used to associate entities with one another?

• Entity A
• Attribute B
• Identifier C
• Relationship D

Which of the following represents the entities?

• Teacher A
• Student B
• Aero plane C
• All D

A file is stored in:

• RAM A
• ROM B
• Cache C
• Hard disk D

In a loop semicolon is placed at the end of condition:

• While A
• For B
• Do-while C
• None of these D

Which of the following is NOT included in the definition of an entity?

• Person A
• Object B
• Concept C
• Action D

Which of the following are ingredients of data modeling?

• Entities A
• Attributes B
• Relationship C
• All D

The output of the statement print ("%2f', 11.4519), is

• 11.4519 A
• 11.45 B
• 11.51 C
• 11 D

An advantage of partitioning is:

• Efficiency A
• Extra space B
• Reliabilty C
• Accuracy D

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

Which of the following can be used as flag value

• + A
• # B
• - C
• all D