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

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

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

An advantage of partitioning is:

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

Which of the following are ingredients of data modeling?

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

-------------------- defines the nature of the relationship

• cardinality A
• entities B
• modality C
• none of these D

A data model is :

• A logical representation of the structure of the database A
• Shown as an entity-relationship diagram B
• Transformed into tables and relationships C
• All D

The relationship can be:

• One-to-one A
• One-to-many B
• Many-to-many C
• All D

Which of the following can be used as flag value

• + A
• # B
• - C
• all D

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

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

Data type int contain bytes:

• 10 A
• 4 B
• 2 C
• 1 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
• on to one relationship 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 escape sequence is used for beep

• /a A
• /b B
• /t C
• /n D

Which of the following is basic data distribution strategy?

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

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

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

In hybrid distribution, what types of fragments are stored at only one site?

• Critical fragments A
• Non-critical fragments B
• Critical and non-critical fragments C
• Only large fragments D

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

An disadvantage of partitioning is:

• Complexity A
• Extra space and update time B
• Inconsistent access speed C
• All D