Table of content
Migration by generating an independent access layer
for a bank
Why is migration so complex?
What are the key factors?
How can this complexity be reduced?
Getting the meta data
Mapping situations on the field-level
Mapping on the record-level
Access layer funtional objectives
Access layer economical objectives
make the programs I/O independent
Make I/O to an object by a perform
Access layer runtime architecture
How do you choose the I/O modul?
Switching from VSAM to DB2
Switching from VSAM/DB2 to PAD
A production fallback scenario
Generating reduces project-time
What can be generated?
What cannot be generated?
Reverse, Reengineer and Run (RRR)
Benefit of a independent file system
Thank you for listening