Equijoins are joins that use the equality operator (=) to match rows. Non-equijoins are joins that use operators other than the equality operator.
A). False. This condition is an equijoin as it uses the equality operator (=).
B). True. This join condition uses the BETWEEN operator, which is not based on equality.
C). False. A natural join is a type of equijoin where the join is made on all columns with the same names in both tables.
D). False. USING clause is used to specify an equijoin on one or more columns.
E). True. This join condition uses the greater than or equal to (>=) operator, making it a non-equijoin.