A category of data or information that describes an entity is called …..
a) attribute
b) data-item
c) record
d) tuple
A collection of all possible values of one or more attributes…….
a) attribute
b) domain
c) record
d) tuple
The number of attributes is called…….of relation.
a) degree
b) domain
c) record
d) tuple
The number of rows is called…………of relation.
a) degree
b) domain
c) cardinality
d) tuple
Which of the following are advantages of relational database model?
a) data integrity
b) data independence
c) data consistency
d) all of these
Which of the following is not general characteristic of relations?
a) each row is unique
b) order of columns is significant
c) order of row is significant
d) columns are all elements are atomic
