Rose::DB::Object - Extensible, high performance RDBMS-OO mapper.

Rose::DB::Object is a base class for objects that encapsulate a
single row in a database table.

Rose::DB::Object objects can represent rows in almost any database
table, subject to the following constraints.
* The database server must be supported by L<Rose::DB>.
* The database table must have a primary key.
* The primary key must not allow null values in any of its columns.
