A primary key that consists of more than one attribute is called…..
a) foreign key
b) composite key
c) multivalued key
d) global key
How many types of relations in relational database model?
a) one
b) two
c) three
d) four
Explanation: base table, query results, views
Which of the following are advantages of views?
a) security
b) simplicity
c) insulation for change
d) all of these
In 3NF, which form of dependency is removed?
a) functional
b) non-functional
c) associative
d) transitive
In relational database, table is also called
a) tuple
b) relation
c) file
d) schema
In 3NF, a non-key attribute must not depend on a……
a) non-key attribute
b) key attribute
c) composite key
d) sort key
