| ## Data - change or span: data conversion and bridge programs

Your source code changes and your data changes must be synchronized. This might sound obvious, but order your worktasks for the most efficiency while making this happen:

- If you need conversion and bridge programs, they need to be finished and tested before code modifications are made to their specifications.
- If you have archive data that cannot be changed due to legal or other constraints, you have to either keep old programs alive to access them or include with your code modifications switches for dual code - to access both the old, unchanged data and the converted data.

We covered the purpose of bridges and their attribute in Specify partition bridges. Be sure your specifications are still appropriate.

©1997 IBM Corporation