12th Class Computer Science MCQS
A category of data or information that describes an entity is called
Record
Tuple
Attribute
Data item
A primary key that consists of more than one attribute is called a
Composite key
Foreign key
Multi-valued key
Global key
The float, long float and double data types are known as:
Integral data
Real data
character data
Integer data
A candidate key is
Primary key
The primary key selected to be the key of relation
All of them
A group attribute that can be the primary key
Which is NOT a valid statement to initialize a variable?
long,population=15000;
cons int N=100;
char n []=”hello World”;
int n=100;
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