If you are working through Enterprise Access products, see your Enterprise Access documentation for information about command syntax that can differ from that described in this guide. Refer also to the OpenSQL Reference Guide for query language details.

4GL fully supports all commands and extensions to access databases through Ingres Federated Database Support and the Enterprise Access products.

The industry standard query language, SQL, is used as the standard query language throughout the body of this guide.

Some of the text and examples in this guide pertain only to Ingres query language, Ingres SQL.

Ingres is compliant with ISO Entry SQL92. In addition, numerous vendor extensions are included. For details about the settings required to operate in compliance with ISO Entry SQL92, see the SQL Reference Guide.

For a description of the QUEL statements available and information on using ABF or 4GL with QUEL, see the QUEL Reference Guide.