System and Environment Handles to PostgreSQL Specific Resources
Two custom classes provide an interface to resources specific to a PostgreSQL database. Note that using these classes reduces your database's portability.
RWDBPGSEnvironmentHandle is an environment handle returned by RWDBDatabase that provides methods allowing you to access or set various connect time and configuration parameters.RWDBPGSSystemHandle contains the PGconn* used by the RWDBConnection, providing direct access to the PostgreSQL libpq API.
