Suppose relation R(A, B) and S(B, C, D) are as follows, Compute the full outer j

Question

Suppose relation R(A, B) and S(B, C, D) are as follows, Compute the full outer join on B the left outer join on B and the right outer join on B in each case, R the left operand and $ is the right operand Then, answer the following questions for each of the three results How many rows are there in the result? How many NULL's appear in the result? Finally find the correct statement in the list below? the full cuter join has 4 rows the left outer join has 2 row the right outer join has no NULL's the left outer join has 4 Nulls'

Explanation / Answer

A B C D

1 2 null null

3 4 5 1

5 6 7 2

null 8 9 3

this is the full outer join table

1) there are 4 rows in the table

2) 3 null value present

answer of correct statement

is a)because full outer join contains 4 rows

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