Final answer:
The statement that Oracle proprietary JOINS can use the WHERE clause for conditions other than the join-condition is true. The WHERE clause can apply additional filters not related to the join itself.
Step-by-step explanation:
The answer to whether Oracle proprietary JOINS can use the WHERE clause for conditions other than the join-condition is A. True.
In Oracle databases, it is possible to specify conditions in the WHERE clause that are not related to joining tables. While the main function of the WHERE clause is to filter the results of a query by specifying conditions that the data must meet, this clause can include a variety of conditions that may or may not relate to the actual joining of tables.
For example, if you are joining two tables, USERS and ORDERS, using a proprietary Oracle join syntax such as USERS.id = ORDERS.user_id, you can still use the WHERE clause to filter the results further, like so WHERE ORDERS.order_date > '2023-01-01'. This does not affect the join condition, but instead applies additional filters to the data returned by the join.