Section 4.1: Curses Up Chapter 4: Problems Chapter 5: Modules 

4.2 Engines

Informix, Ingres, PostgreSQL, and Sybase engines have their origins in Unix at Berkeley in the 1970s. They share some features which are counter to the ANSI SQL standards which were later defined in 1986.
Aubit4GL allows you to connect to different database engines. This leads to difficulties when you are coding into your 4GL programs any of the above Informix idioms which are not part of the SQL standard. To use Aubit4GL with non Informix engines, you need to confine yourself to just the ANSI standard, or rely on Aubit4GL’s translation mechanism to convert to Informix, or get a special version of the engine which supports the Informix variations. Nearly all major applications written in 4GL exploit the Informix SERIAL behaviour and the 4GL code usually relies on getting the serial value for the sqlca.sqlerrd record. For this you need an Informix compatible engine.
Aubit4GL can connect directly to
 Section 4.1: Curses Up Chapter 4: Problems Chapter 5: Modules