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Consider the statement SELECT * FROM A JOIN B ON A . x = B . x WHERE A . z = 5 0 0

Consider the statement
SELECT * FROM A JOIN B ON A.x= B.x WHERE A.z=500
Assume that the probability of the join condition being satisfied is p, the probability of the
where clause being satisfied is q, and the number of records in tables A and B are NA and
NB, respectively
(a) What is the communication complexity of the statement if the join operation is done
first followed by a select
(b) What is the communication complexity of the statement if the select operation is
done first followed by a join
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