Problem:

Is there a possibility to interface COBOL vs Open Source databases, e.g. MySQL or PostgreSQL?

Resolution:

Yes, via an ODBC interface provided by Net Express Windows product also provided by Server Express Unix / Linux product (to find in doc files under:OpenESQL) and including a precompiler there is a possibility to interface Open Source databases, e.g. MySQL / PostgreSQL, using ODBC drivers delivered by this Open Source community:

a) MySQL:  http://www.mysql.org/downloads/connector/odbc/

b) PostgreSQL: http://pgfoundry.org/projects/psqlodbc