Takes you through the process of adding SQL function emulation to a DB2 application, and migrating that application from DB2
to PostgreSQL using HCOPG.
The demonstrated function emulation includes:
- Adding math functions to PostgreSQL that represent standard math functions in DB2
- Mapping the DB2 functions to the new PostgreSQL
functions using the Customize SQL Name Mapping tool
Prerequisites
- If you have not already done so, review the
Assumptions and
Before you begin a tutorial section in the
Tutorials: HCO for PostgreSQL (HCOPG) topic to ensure your environment is set up properly.
- Before attempting this tutorial, you must first work through the steps in
Tutorial: Create and Load the HCO_Test Database.
Eclipse project - FunctionEmulation
The
Eclipse project we provide for this tutorial contains
the
FunctionEmulation project, which is a native COBOL project.
The
project also contains the
program, which is a COBOL SQL program that does not contain function emulation in its initial form.
The demonstration
Eclipse project and its components are located in the
%PUBLIC%\Documents\Micro Focus\Enterprise Developer\Samples\Mainframe\SQL\hcopg\FunctionEmulation directory by default.
Sequence
To complete this tutorial, progress through these topics in the order presented here. The bottom of each topic provides
Next topic and
Previous topic navigational links to help you proceed in the proper sequence: