The SQL query mentioned is a Natural Outer Join. A Natural Join combines rows from two tables where the join condition is based on the equality of values in the common columns. If there is no match, the missing side will contain null.

Here, the common column in relations R and S is 'B'.

The tuples in R are {(1,2), (1,3), (3,4)} and in S are {(2,5), (4,6), (7,8)}.

The Natural Outer Join of R and S will result in combining rows with matching values in column 'B' and for non-matching values, it will return the rows from R with null in all columns of S.

So, the resulting tuples will be:

- (1,2,5) because 2 is common in both R and S.
- (1,3,null) because 3 is in R but not in S.
- (3,4,6) because 4 is common in both R and S.

So, the number of tuples in the result of the SQL query will be 3.

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The SQL query mentioned is a Natural Outer Join. A Natural Join combines rows from two tables where the join condition is based on the equality of values in the common columns. If there is no match, the missing side will contain null.

Here, the common column in relations R and S is 'B'.

The tuples in R are {(1,2), (1,3), (3,4)} and in S are {(2,5), (4,6), (7,8)}.

The Natural Outer Join of R and S will result in combining rows with matching values in column 'B' and for non-matching values, it will return the rows from R with null in all columns of S.

So, the resulting tuples will be:

- (1,2,5) because 2 is common in both R and S.
- (1,3,null) because 3 is in R but not in S.
- (3,4,6) because 4 is common in both R and S.

So, the number of tuples in the result of the SQL query will be 3.

Knowee AI · Accepted Answer

The SQL query mentioned is a Natural Outer Join. A Natural Join combines rows from two tables where the join condition is based on the equality of values in the common columns. If there is no match, the missing side will contain null.

Here, the common column in relations R and S is 'B'.

The tuples in R are {(1,2), (1,3), (3,4)} and in S are {(2,5), (4,6), (7,8)}.

The Natural Outer Join of R and S will result in combining rows with matching values in column 'B' and for non-matching values, it will return the rows from R with null in all columns of S.

So, the resulting tuples will be:

- (1,2,5) because 2 is common in both R and S.
- (1,3,null) because 3 is in R but not in S.
- (3,4,6) because 4 is common in both R and S.

So, the number of tuples in the result of the SQL query will be 3.

Suppose relation R(A,B) currently has tuples {(1,2), (1,3), (3,4)} and relation S(B,C) currently has {(2,5), (4,6), (7,8)}. Then the number of tuples in the result of the SQL query:SELECT *FROM R NATURAL OUTER JOIN S;26None of the mentioned4

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