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

Which of the following represents the entities?

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

An advantage of partitioning is:

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

The function clrscr ( ) is defined in

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

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

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

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

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

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

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

Which of the following keys us not unique:

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

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

Which of the following escape sequence is used for beep

• /a A
• /b B
• /t C
• /n D

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

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

Object used to retrieve data from database is called:

• Forms A
• Repons B
• Queries C
• Tables 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

Organizing the database in computer disk storage is done in:

• Logical design A
• Physical design B
• Analysis C
• Implimentation D

A file is stored in:

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

An index may be created on:

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

Which of the following is basic data distribution strategy?

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