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

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

Which of the following are ingredients of data modeling?

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

An index may be created on:

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

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

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

An advantage of partitioning is:

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

A factor to consider when choosing a file organization is:

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

Which is used to display yes/no values:

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

Data type int contain bytes:

• 10 A
• 4 B
• 2 C
• 1 D

The relationship can be:

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

_______________ refers to a method of database distribution in which one database contains data that are included in another database.

• Splitting A
• Partitioning B
• Replication C
• Dividing D

Which of the following is basic data distribution strategy?

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

An attribute is also known as:

• Table A
• Field B
• Row C
• Relation 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

Which of the following escape sequence is used for beep

• /a A
• /b B
• /t C
• /n D

Getch stands for:

• Go character A
• Give character B
• Get character C
• All of these D

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

A \t is used for:

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