The OpenEdge Hive

If your Progress 4GL needs run with different dataservers (like Oracle, AS400, ODBC, SQL, ...) then maybe you need to consider some special coding practices. If we know what dataservers require, then maybe we can write the Prolint rules to help you check if your 4GL is portable.

* Character fields on AS/400 do not have variable length. If the Progress format is "x(20)" then the AS/400 field will have a fixed length of 20 characters. Your Progress session will crash when you try to write more than 20 characters to the field.

* cannot rely on the existence of VST, or system tables like _File and _Field

* The length of the field name must be less than 26 chars for Oracle

what else?