12th Class Computer Science MCQS
In 2NF, which form of dependency is removed ?
associative
functional
partial
transitive
A relation is in 2NF if it is in 1NF and all its non-key attributes are:
Independent of any other relation
Dependent on the entire primary key
Independent on the primary key
Dependent on part of the primary key
A relation is in third normal form if it is in second normal form and:
Independent of the key
Dependent on the whole key
Dependent on part of the key
Has no transitive dependencies
We can make two way decisions with the help of
if
nested
if-else
all
The number of bytes used by ‘int’ data type in C are:
8
12
16
2
In relational data base, a table is also called:
Tuple
Relation
File
Schema
Storing the same information in two different ways or forms is called
homonyms
mutually exclusive data
redundant information
database integrity
Any array script should be:
Float
Int
Array
Double
The type of expression x > y is
relational
logical
arithmetic
conditional
The attribute on the left side of the arrow in a functional dependency is called:
Determinant
Foreign key
Primary key
Candidate key
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