# 21. Appendix

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YACC SQL Grammar Reference
Error Codes Reference
Release Notes
Product Support
OpenLink Discussion Forums
Virtuoso System Tables
Basic Syntax of Regular Expressions
Server & client versions compatibility

## 21.4. Product Support

### 21.4.1. OpenLink Discussion Forums

If your browser does not parse the Network News Transport Protocol (NNTP) URL's used in the hyperlinks below, then simply point your news client to one of the following news servers: news.openlinksw.com or news.openlinksw.co.uk.

#### 21.4.1.1. OpenLink Virtuoso

Table: 21.4.1.1.1. Virtuoso Newsgroups
Newsgroup Description | Newsgroup URL
--- | ---
OpenLink Virtuoso | openlink.public.virtuoso

#### 21.4.1.2. OpenLink Data Access (Lite Edition)

Dedicated to Database Connectivity issues that relate to OpenLink Data Access Drivers (PC based) that depend on:

Table: 21.4.1.2.1. OpenLink Data Access Newsgroups
Newsgroup Description | Newsgroup URL
--- | ---
Oracle SQL*Net for remote Oracle Database Engine Connectivity. | openlink.public.lite.oracle
Sybase Open Client for remote Sybase Database Engine Connectivity. | openlink.public.lite.sybase
Progress Client Networking for remote Progress Database Engine Connectivity. | openlink.public.lite.progress
Informix I-Net or I-Connect for remote Informix Database Engine Connectivity. | openlink.public.lite.informix
Microsoft NETLIB for remote MS SQL Server Database Engine Connectivity | openlink.public.lite.ms-sqlserver
IBM DB2 Client Networking for remote DB2 Database Engine Connectivity | openlink.public.lite.db2
CA-Ingres Net for remote CA-Ingres & CA-OpenIngres Database Engine Connectivity. | openlink.public.lite.ingres
3rd Party ODBC Drivers for remote Database Engine Connectivity. | openlink.public.lite.odbc-agent

#### 21.4.1.3. OpenLink Data Access (Multi Tier Edition)

Dedicated to Database Connectivity issues that relate to OpenLink Data Access Drivers that depend on

Table: 21.4.1.3.1. OpenLink Data Access Newsgroups
Newsgroup Description | Newsgroup URL
--- | ---
OpenLink's Database Independent Communications Layer for remote Oracle Database Engine Connectivity. | openlink.public.multi-tier.oracle
OpenLink's Database Independent Communications Layer for remote Sybase Database Engine Connectivity. | openlink.public.multi-tier.sybase
OpenLink's Database Independent Communications Layer for remote Informix Database Engine Connectivity. | openlink.public.multi-tier.informix
OpenLink's Database Independent Communications Layer for remote Progress Database Engine Connectivity. | openlink.public.multi-tier.progress
OpenLink's Database Independent Communications Layer for remote CA-Ingres Database Engine Connectivity. | openlink.public.multi-tier.ingres
OpenLink's Database Independent Communications Layer for remote MS SQL Server Database Engine Connectivity. | openlink.public.multi-tier.ms-sqlserver
OpenLink's Database Independent Communications Layer for remote DB2 Database Engine Connectivity. | openlink.public.multi-tier.db2
OpenLink's Database Independent Communications Layer for remote Unify 2000 Database Engine Connectivity. | openlink.public.multi-tier.unify
OpenLink's Database Independent Communications Layer for remote PostgreSQL Database Engine Connectivity. | openlink.public.multi-tier.postgres
OpenLink's Database Independent Communications Layer for remote Solid Database Engine Connectivity. | openlink.public.multi-tier.solid
OpenLink's Database Independent Communications Layer for remote Kubl Database Engine Connectivity. | openlink.public.multi-tier.kubl
OpenLink's Database Independent Communications Layer for remote Velocis Database Engine Connectivity. | openlink.public.multi-tier.velocis
OpenLink's Database Independent Communications Layer for remote ODBC Data Source Connectivity using 3rd Party ODBC Drivers. | openlink.public.multi-tier.odbc-agent

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