As described previously in this chapter, you can use many other file systems in place of, or in combination with ACUCOBOL-GT's Vision file system. Supported file systems include:
| XML | enabled and available on all platforms |
| RMS | used in place of Vision on VMS and OpenVMS platforms |
| EXTFH interface | enabled and available on all platforms; allows access to most files for which an EXTFH library is available |
| MPE | available on HP e3000 emulators |
| C-ISAM | licensed separately; available on most UNIX/Linux platforms |
| P.SQL/Btrieve | licensed separately; available on most Windows platforms |
| DB2 | licensed separately; through Acu4GL, or by embedded SQL and the DB2 preprocessor |
| Oracle | licensed separately; through Acu4GL, or by embedded SQL and the Oracle preprocessor |
| MS SQL | licensed separately; through Acu4GL, or by embedded SQL with AcuSQL |
| Informix | licensed separately; through Acu4GL, or by embedded SQL with AcuSQL |
| Sybase | licensed separately; through Acu4GL, or by embedded SQL with AcuSQL |
| ODBC-compliant | licensed separately; through Acu4GL, or by embedded SQL with AcuSQL |
On most platforms, ACUCOBOL-GT comes preconfigured to work with Vision, XML, and EXTFH. On VMS and OpenVMS systems, Vision is replaced by RMS.
Configuration information for file systems that use a separately licensed product is included in the documentation provided with that product. For information about Acu4GL, AcuSQL, and compatible embedded SQL technologies, see their respective user's guides, or contact your Micro Focus extend Sales Professional.