Using the millennium language extensions, you can move gradually toward a solution that fully expands the date field.
Do the following steps:
After you have completed the first two steps, you can repeat the remaining steps any number of times. You do not need to change every date field in every file at the same time. Using this method, you can select files for progressive conversion based on criteria such as business needs or interfaces with other applications.
When you use this method, you need to write special-purpose programs to convert your files to expanded-date form.