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

An index may be created on:

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

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

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

Which of the following escape sequence is used for beep

• /a A
• /b B
• /t C
• /n D

Format specifier starts with the symbol

• # A
• % B
• * 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

Every relation must have:

• Primary key A
• Candidate key B
• Secondary key C
• All of these D

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

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

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

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

Escape sequence starts with the character

• % A
• / B
• # C
• none D

Which of the following are ingredients of data modeling?

• Entities A
• Attributes B
• Relationship 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

In an E-R diagram, a rectangle represents:

• Entity A
• Attributes B
• Relationship C
• None 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

The relationship can be:

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

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

Local variables are also called:

• Automatic variables A
• Global variables B
• Grid Variables C
• None of these 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
• One-to-one relationship D