Foreign Key Problem

i have the following code...

-------------

$assembly = $_POST['product_base'];
$assembly_notes = $_POST['assembly_notes'];

$db = &ADONewConnection('postgres');
$db -> Connect($db_string,$db_owner,$db_pw,$db_name);

$assembly_notes_insert_id = $db->getone("select
nextval('t_assembly_notes_assembly_notes_id_seq')");

$sql = "INSERT INTO t_assembly_notes
(assembly_notes_id, assembly_notes,
assembly_notes_entry_date) VALUES (" .
$assembly_notes_insert_id . ", " .
$db->qstr($assembly_notes) . ", " .
$db->DBDate(time()) . ")";

$result_notes = $db->Execute($sql);

//insert ids into link table

$id = $assembly_notes_insert_id;

if (isset($_POST['product_base']) and
is_array($_POST['product_base']))
{
foreach($_POST['product_base'] as $V)
{
echo "Value: $V<br>\n";

$query = "INSERT INTO
t_link_product_base_assembly_notes " .
"(product_number, assembly_notes_id) " .
"VALUES (" . $db->qstr($id) . ", " . $db->qstr($V) .
")";

$result_link = $db->Execute($query);
}
}

-----------

everything works fine except for my foreign keys.

this code checks to see whether my assembly_notes_id
is in my product table and checks whether my
product_number is in my assembly_notes table - the
opposite of what i want to happen.

my link table has its assembly_note_id referencing the
assembly_note_id in the assembly_notes table.

my link table has its product_number referencing the
product_number in the product table.

i'm at a loss b/c i don't understand this behavior.

----------

i've created a foreign key in pgadmin 3.

i have a link table that links to product_number and
assembly notes. the reason for the link table is so i
can allow one note to be attached to more than one
product_number.

i created a foreign key in pgadmin 3 bwteen the
product_number in the link table and product_number in
my product table.

when i go to the pgadmin 3 constraints folder, open
this foreign key and click on the columns tab, it
shows conflicting information.

Local says "product_number"
Referenced says "product_number"

so far, so good.

Referencing says ".......pg dropped 1......." in the
drop down menu. i previously had to drop my first
created column.

when i first set it up, i made sure to choose
product_number from the drop down menu, but it
defaults back to ".......pg dropped 1......."

i'm not sure if this is related to my problem, but too
much information is better than not enough
information.

tia...

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