Dictionary for database fieldnames?

Do I have access to the database field names via the dictionary?
I need the name for "TUpdatingArgs.OldColumnValues" in Event "OnUpdating".
Or can I query the field name somewhere else?

Otherwise I would have to keep my own directory

You can't get it in an easy way because the database only has information about the property name of the object.

The "low-level" column names are solved at the time the SQL statement is being built.

Ok, no problem.
I have only a few cases. There I will manage a unit with constants