Progress
Programming
Handbook
Multiple Representations for a Single Value
Both procedure logic and your deployment strategy determine whether you need more than one representation for a single value. Two common scenarios are:
- A value needs just one representation within a single user interface, but you need to alter the data representation when deploying the same application in a different environment with a different user interface. For example, you view a database character field as a fill-in in one interface, but as an editor in another.
- A value needs more than one representation within a single interface. For example, the user chooses a file to delete from a selection list, and the application displays a dialog that asks them if they really want to delete the file, giving them the opportunity to change the file in a fill-in. Note that two representations of the same underlying value cannot appear in the same frame; if a single interface has more than one representation for a value, they must appear in different frames.
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