>Is main table in the combo, or it is table , involved into relation with main table?>

The combo box "cbserial_id' is simply a field of a table "table1" included in my
form.
1. In my table:
table1 fields: serial_id (primary key) ... and some other fields.

2. data environment in my form:
table1 has buffer mode override = 1
order : serial_id

3. In my form:
cbserial_id is a combox, rest of the fields are textboxes.
properties of cbserial_id:
control source: table1.serial_id
bound to: .T.
rowsource: table1.serial_id,name,acc_code
rowsource type: 6 - fields
select on entry: .T.
sorted: .F.

Thanks again for your help.