Yes it can. I would avoid it like the plauge but, if you want to know.

Define your row. 
CREATE TABLE image {
    item_id    INTEGER NOT NULL,
    picture    OID,
    CONSTRAINT image_pk PRIMARY KEY(item_id),
    CONSTRAINT image_item_id_fk FOREIGN KEY(item_id) REFERENCES item(i
+tem_id)
};

[download]
Then do your inserts, selects and deletes 
INSERT INTO image VALUES (3, lo_import('/tmp/image_name.jpg'));
SELECT lo_export(picture, '/tmp/image_name.jpg') FROM image WHERE item
+_id = 3;
to delete:
SELECT lo_unlink(picture) FROM image WHERE item_id = 3;

[download]
WARNING: this code is untested, but double checked

FYI: why I suggest avoiding BLOBs.
Not portable to other RDBMSs
Filesystems are much better at handling files
Slows your DB down during BLOB access, usally only slightly
a general big pain in the A**

grep 
grep> cd pub 
grep> more beer

In reply to Re: PostgreSQL and binary data by grep
in thread PostgreSQL and binary data by Anonymous Monk

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