The ExternalSet class encapsulates the behavior of an unordered virtual collection that represents the rows in a result set generated from an SQL query that has no sort specification; that is, it has no ORDER BY clause.
The order in which instances are retrieved is dependent on your data-source.
For details about the method defined in the ExternalSet class, see "ExternalSet Method", in the following subsection.
External database-defined and user-defined external set subclasses