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

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

A \t is used for:

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

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

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

Which key does not have uniqueness property?

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

All of the following are components of physical database design EXCEPT:

• Data volume and usage anylisis A
• Data distribution strategy B
• File organization C
• Normalize the relations D

An advantage of partitioning is:

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

Which of the following can be used as flag value

• + A
• # B
• - C
• all D

A factor to consider when choosing a file organization is:

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

Every relation must have:

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

Which of the following is basic data distribution strategy?

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

Conditional operator is alternative of:

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

Conditional operator is also called:

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

An disadvantage of partitioning is:

• Complexity A
• Extra space and update time B
• Inconsistent access speed C
• All D

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

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

Which component of physical database design refers to the consistency of data?

• Indexes A
• Integrity constaint B
• File organization C
• Data distribution strategy D

The number of variables that can be used in printf ( ) function are

• one A
• many B
• three C
• zero D

A file is stored in:

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