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I can imagine the "date accessed" being an attribute of the URL, rather than being treated as an attribute of the citation as a whole. You may also have a bibliographic date on the item. So if I cite a web page that has a copyright date of 2002, but I access that page on May 3, 2003, then the date of the cited document is 2002, but I am authenticating the URL only as of May 3, 2003. In a sense, this latter date often substitutes for a date of publication when the document itself gives no indication of a publication date, but in fact it is information about the URL in my mind. The publication would actually be "n.d." in library parlance -- "no date." kc On Fri, 2003-08-29 at 06:58, Rebecca S. Guenther wrote: > Date Valid is for describing a resource that has date-sensitive > information. Examples are a train schedule which is only valid beginning > on a certain date or a law that will go into effect on a given date. > > On the second question, I was going to answer the same way that Suzanne > did. The record describes a given resource with an identifier. The > resource was accessed on a particular date and is being described in terms > of how it appeared on that date. So is there really a need to link them? > The only situation I can think of when you might want to associate the > date with an identifier is if you are giving more than one URI and you > accessed them on different dates-- maybe a mirror site or something. If > people think it important to enable linking the dateAccessed with the > identifier, we could use the ID and IDref constructs available in XML as > attributes to dateAccessed and Identifier, which would provide a linking > mechanism. > > Rebecca > > On Thu, 28 Aug 2003, Bruce D'Arcus wrote: > > > On Thursday, August 28, 2003, at 05:18 PM, Rebecca S. Guenther wrote: > > > > > It has been suggested that MODS include a date of access. The example > > > given was for bibliographic citations. The Chicago Manual of Style > > > includes an access date for an electronic resource (i.e. date it was > > > last accessed, since Web sites change frequently) in standard > > > bibliographic citations. This is different from dateModified, which is > > > being added to MODS in version 3.0, in that dateModified tells you > > > date that the resource was last changed, while date accessed would > > > tell you when it was last viewed or accessed and makes no claims about > > > when it was last modified. > > > > What is the purpose of dateValid then? > > > > > Are there any thoughts about adding another date to MODS? Under > > > originInfo it would be dateAccessed. It then would use the dateType > > > definitions. > > > > Question: how would one then couple the access date with a specific > > URL, since each would be contained in different elements? > > > > Bruce > >