Array elem as foreign key?

Howdy,

I have two tables, thus (sans non-relevent cols)....

-- Associate to a computer in the 'computers' table.
CREATE TABLE softwares (
id SERIAL PRIMARY KEY,
-- more cols after
);

CREATE TABLE computers (
--some cols before
softwares INTEGER[10],
--more cols after
);
COMMENT ON COLUMN computers.softwares IS '0th elem = OS. 1st-Nth = Any SW';

...and I'd like each elem of computers.sofwares
to reference softwares.id (or be NULL) but my
several attempts to date have been rejected.

Is there a way to do this? If so, how?

TIA,

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