[RBASE-L] - Assigning values with variables in a form vs SAVEROW/UPDATE

[Michael J. Sinclair]

I am trying to understand how and when columns get their values within a form.
If I put COLUMN_NAME = .varname in the Add Variable Expression builder, is that 
the exact same outcome as using a SAVEROW followed by an UPDATE tablename set 
column_name = .varname {where clause}?
Mike