Question

An outer join operator consists of a minus sign enclosed in parentheses, (-).

A) True
B) False

Answer 1

The statement is False. An outer join operator is typically represented by a plus sign enclosed in parentheses, (+).

Step-by-step explanation:

In relational databases, an outer join is used to retrieve records from one table even if there are no matching records in another table. The syntax for an outer join varies among database systems, but a commonly used representation is the plus sign enclosed in parentheses, such as (+).

For example, in Oracle Database, the following SQL query performs a left outer join:

SELECT * FROM table1, table2 WHERE table1.column(+) = table2.column;

The minus sign enclosed in parentheses, as stated in option A, does not represent the outer join operator and is not standard syntax in most relational databases.

Option B is the answer.