Using SQL Language: 4 a) __________ operator is a relational algebra operator that retrieves all values for selected col

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Using SQL Language:
4
a)
__________ operator is a relational algebra operator that
retrieves all values for selected columns.
difference
product
select
project
b)
Which of the following forms is based on multivalued
dependencies
First
Second
Third
Fourth
c)
Aggregate functions cannot be used in the_______.
Where clause
Having clause
Select clause
subqueries
d)
SQL view is said to be updatable if
The query from clause has only one table
The query does not have a group by or having clause
The select clause contains only attribute names of a table
All of the mention
e)
In Functional Dependencies, ________ is the basic element
required for constraints
Primary Key
Key
Super key
All the above