WorksheetsDBMS #1
Total questions: 6
Worksheet time: 4mins
Name
Class
Date
1.
Relation is a
a)
row
b)
attribute
c)
table
d)
database
2.
select the keys that uniquely identify a tuple in a table
a)
Primary key
b)
Foreign key
c)
Candidate key
d)
Super key
3.
σ denotes in relational algebra
(a)
4.
Collection of information stored in a database at a particular moment is
a)
view
b)
schema
c)
instance
d)
none of the above
5.
The row in a table is called
a)
tuple
b)
attribute
c)
field
d)
column
6.
DBMS is an interesting subject,say yes or no
a)
yes
b)
no
100 %
