Cartesian product in relational algebra is
a unary operator
a binary operator
a ternary operator
not defined
Key to represent relationship between tables is called
primary key
candidate key
foreign key
alternate key
In a table Employee Emp- code, Pan_ no are the candidate keys. If Emp_ code is taken as the primary key then Pan_ no is _________ key.
In a relational model, relations are termed as
tuples
attributes
tables
rows
Data independence means
data is defined separately and not included in programs
programs are not dependent on the physical attributes of data
programs are not dependent on the logical attributes of data
both 2 and 3
Who is responsible for managing and controlling the activities associated with the database ?
Database administrator
Programmer
Naive user
End user
