ECAT Computer Science MCQS Page 2
Which of the following are valid case statements in a switch?
Case 1:
Case x<4:
Case ‘ab’:
Case 1.5:
Database integrity refers to the
Both a and b
Correctness of data
Consistency of data
None of these
An expression that uses a relational operator is known as:
Relational
Operational
Sequential
Serial
The three programming structures are:
Sequence, decision, and repition
Process, decision, and alternation
Sequence, definition, and process
Relation, comparison, and process
Which programming structure makes a comparison?
Decision
Relation
Sequence
Repitition
The case block ends with:
Break;
End select
End case
Case else
Which operator in C is called a ternary operator?
( )
if
++
?
Conditional operator is an alternative of:
if-else
if
Nested if
All
To be in 2NF every non key attribute must depend on
All parts of the key
Key
Composite key
Both a and b
Which is an example of multiple branches form single expression?
Switch statement
If statement
While loop
All
The conditional portion of the If statement can contain:
Any expression that can be evaluated to a Boolean value
Any valid constant
Any valid variable
Any valid constant or vairable
When we make any modification in a relation it is called
Modification anomaly
Insertion anomaly
Deletion anomaly
Both a and b
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