To answer this question, let's go through each option to understand why it is correct or incorrect:
Option A) You cannot use IN operator in a condition that involves an outer join - This option is true. When using an outer join, you cannot use the IN operator in the condition that involves the outer join.
Option B) You use (+) on both sides of the WHERE condition to perform an outer join - This option is incorrect. The use of (+) syntax on both sides of the WHERE condition is used in Oracle's old outer join syntax, but it is not the recommended approach. The ANSI SQL standard syntax should be used instead.
Option C) You use () on both sides of the WHERE condition to perform an outer join - This option is incorrect. The use of () syntax on both sides of the WHERE condition is not valid for performing an outer join.
Option D) You use an outer join to see only the rows that do not meet the join condition - This option is incorrect. An outer join is used to include rows from one table that may not have a match in the other table, but it does not limit the result set to only the rows that do not meet the join condition.
Option E) In the WHERE condition, you use (+) following the name of the column in the table without matching rows, to perform an outer join - This option is true. In Oracle's old outer join syntax, you can use (+) following the name of the column in the table without matching rows to perform an outer join.
Option F) You cannot link a condition that is involved in an outer join to another condition by using the OR operator - This option is true. When using an outer join, you cannot link a condition involved in the outer join to another condition using the OR operator.
Therefore, the three true statements regarding the use of outer joins are:
A. You cannot use the IN operator in a condition that involves an outer join.
E. In the WHERE condition, you use (+) following the name of the column in the table without matching rows, to perform an outer join.
F. You cannot link a condition that is involved in an outer join to another condition by using the OR operator.