=head1 METHODS
Note: Methods which can be implemented generically for all DBs are
-implemented in this module. If needed, they can be overriden with
+implemented in this module. If needed, they can be overridden with
DB-specific code in a subclass. Methods which are prefixed with C<_>
are considered protected. Subclasses may override these methods, but
other modules should not invoke these methods directly.
Database-specific subclasses should define the implementation for these data
types as a hash reference stored internally in the schema object as
-C<db_specific>. This is typically done in overriden L<_initialize> method.
+C<db_specific>. This is typically done in overridden L<_initialize> method.
The following abstract boolean values should also be defined on a
database-specific basis: