Determines if parameter information is available from the stored procedure on the server.
Return result is always True for PostgresSQL servers.
Syntax:
function DescriptionsAvailable: Boolean;
Description:
Call DescriptionsAvailable to determine if a stored procedure on a server can return parameter information to the application. If DescriptionsAvailable returns True, parameter information is available from the server. If DescriptionsAvailable returns False, parameter information is not available.