ICS Part 2 Computer Science Chapter 3 Online Test

Local variables are also called:

• Automatic variables A
• Global variables B
• Grid Variables C
• None of these D

Which of the following can be used as flag value

• + A
• # B
• - C
• all 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

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

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

In ERD model, the relationship between two entities is represented by a

• diamond symbol A
• rectangular box B
• oval symbol C
• line D

Which of the following is basic data distribution strategy?

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

• mendatory A
• optional B
• may be many C
• none of theses 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 \t is used for:

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

Getch stands for:

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

Object used to retrieve data from database is called:

• Forms A
• Repons B
• Queries C
• Tables D

Which of the following activities are involved in data analysis?

• Data flow diagram A
• Decision Tables B
• Decision Trees 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

Which of the following keys us not unique:

• Candidate key A
• Forein key B
• Primary key C
• Secondary key D

An advantage of partitioning is:

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