Is it possible to have calculated attributes which are not saved in the database but calculated from other attributes as needed in forms or queries and then discarded?
I need to create Data Entry form with totals and other formulas displayed on the form during data entry but not saved? Is there any other way to display calculated items on the Data Entry form?
No, at the moment calculated attributes are always persisted in the database. You can use a non-persistent object, though, with calculated fields. You can create an instance of such an object and it will then be automatically discarded by the system
How about a rule that runs on save: If CalculatedField IS DEFINED then CalculatedField=0. At least that way they will all be consistent the next time that the form is opened.