[Xesam] Ontology snapshot

Antoni Mylka antoni.mylka at dfki.uni-kl.de
Mon Jun 11 06:49:18 PDT 2007

Evgeny Egorochkin pisze:
> The objection I have here is that Attachment should be Email. Since that's 
> where attachments are stored. As you know attachment is just another part of 
> an email. Stored *in* an attachment is a stretch.

Not only email

VCARD attachments: PHOTO (RFC 2426 sec. 3.1.4), LOGO (sec. 3.5.3), SOUND 
(sec. 3.6.6.), KEY (sec. 3.7.2)

ICAL attachments: ATTACH (RFC 2445 sec.

ID3 attachments: attached picture (http://www.id3.org/id3v2.3.0 sec. 
4.15), general encapsulated object (op. cit. 4.16)

EXIF attachments: audio data (http://www.exif.org/Exif2-2.PDF sec. 5). 
Used by some digital cameras to attach a sound clip to a picture.

That's why I would opt for a generic Attachment class, without 
references to email. I do agree that an attachment is part of an email.

Antoni Mylka
antoni.mylka at dfki.de

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