This is some welcome progress on date encoding. xsd:date and
xsd:dateTime are useful for date snapshots but there are a lot of
features of ISO 8601 it is not possible to encode at present. It would
be very useful to be able to encode date ranges in dcterms:valid.
Surely a dcterms:ISO8601 syntax encoding scheme is not impossible.
On a related note, has anybody used xsd:duration with dcterms:extent?
Policy and Strategic Projects
Government Information Management Branch
National Archives of Australia
PO Box 7425
Canberra Business Centre ACT 2610
T (02) 6212 3731 F (02) 6212 3989 M 0418 394 778
[log in to unmask]
From: General DCMI discussion list [mailto:[log in to unmask]] On
Behalf Of Ray Denenberg, Library of Congress
Sent: Tuesday, 25 November 2008 3:27 AM
To: [log in to unmask]
Subject: Re: best practice for date ranges
Sorry to come late to this discussion .... We have been working on a
date/time definition, it is based on ISO 8601 (although not on W3CDTF,
for reasons described in the second reference below), supports ranges
and several other features, is part of the PREMIS 2.0 schema, and we are
considering developing it further for use in other schemas.
The schema is at:
----- Original Message -----
From: "Dunn, Kathryn M." <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, November 19, 2008 5:33 PM
Subject: best practice for date ranges
Forgive me if this isn't the right listserv for implementation questions
- suggestions for more appropriate places to go are welcome.
I am wondering if there is any prevailing thought on how to represent a
date range, when using the W3CDTF profile of ISO 8601.
http://dublincore.org/documents/dcmi-terms/#terms-date uses the
definition "A point or period of time associated with an event in the
lifecycle of the resource.", and recommends
http://www.w3.org/TR/NOTE-datetime, but there is no guidance there on
how we might handle a period of time.
I feel like I have seen something like this within a DC date element,
but can't come up with any references:
Thanks in advance for any help!
Technology & Metadata Librarian
Rensselaer Polytechnic Institute
[log in to unmask]