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

Which is used to display yes/no values:

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

A \t is used for:

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

An attribute is also known as:

• Table A
• Field B
• Row C
• Relation D

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

_______________ 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

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

Conditional operator is alternative of:

• If A
• If-else B
• Nested if-else C
• None of these D

Every relation must have:

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

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

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

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

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

Conditional operator is also called:

• True operator A
• Ternary-operator B
• Truth operator C
• All of these D

Local variables are also called:

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