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

Conditional operator is alternative of:

• If A
• If-else B
• Nested if-else 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

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

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

Every relation must have:

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

The relationship can be:

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

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

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

In an E-R diagram, a rectangle represents:

• Entity A
• Attributes B
• Relationship C
• None D

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

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

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

A file is stored in:

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

Which is used to display yes/no values:

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

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

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

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

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

Relationship are

• uni-directional A
• bi-directional B
• tri-directional C
• none of these 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 can be used as flag value

• + A
• # B
• - C
• all D

Which of the following is basic data distribution strategy?

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