Final answer:
The statement that NATURAL JOIN can link two tables with a commonly named and defined column is true. It is a type of join that automatically uses columns of the same name and type to join tables.
Step-by-step explanation:
The statement that NATURAL JOIN keywords can be used to link two tables that have a commonly named and defined column is True. A NATURAL JOIN is a type of join that automatically finds columns in two tables with the same name and type and uses this as the basis for joining the tables. It simplifies syntax, but caution must be used as it can produce unexpected results if not carefully managed, especially when there are multiple columns with the same name that you do not intend to join on.