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 activities are involved in data analysis?

• Data flow diagram A
• Decision Tables B
• Decision Trees C
• All D

Which of the following represents the entities?

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

Types of translators are:

• Compiler A
• Interpreter B
• Assembler C
• All 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
• on to one relationship D

A person's name, birthday and social security number are examples of:

• Attributes A
• Entities B
• Relationships C
• Descriptors D

Which is used to display yes/no values:

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

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

The relationship can be:

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

Which of the following keys us not unique:

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

A factor to consider when choosing a file organization is:

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

The output of the statement print ("%2f', 11.4519), is

• 11.4519 A
• 11.45 B
• 11.51 C
• 11 D

A \t is used for:

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

Which of the following key does not hold uniqueness property ?

• candidate key A
• foreign key B
• primary key C
• Secondary key D

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

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

Optional is represented by

• 0 A
• 1 B
• 2 C
• none of these D