Best Practices for Using Constants and Expression Rules in Appian

Hard to know without more details but generally yes, you’ll want to store that information in a constant and create an expression rule (i.e. isPassingGrade).

It's hard to recommend the best approach without knowing the full requirements, but yes, you can store the passing mark in a constant and use an expression rule to determine whether the student has passed. However, if the passing mark is configurable or expected to change frequently, I would recommend storing it in a database table and providing an admin interface to manage it. This way, authorized users can update the value without requiring application changes or deployments.

If it's a fixed value that rarely changes, using a constant should be fine.

Store the passing mark in a constant and reference it in an expression rule like, rather than hardcoding the number. This gives you one place to update it.

The exception: if the passing mark varies by course or exam, or business users need to change it without a deployment, store it in a database reference table instead.

Probably yes.