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gils: FW: GILS Profile Version 2 Changes

gils: FW: GILS Profile Version 2 Changes

FW: GILS Profile Version 2 Changes

Turner Fay (fst@ITS.NLC-BNC.CA)
Tue, 24 Sep 1996 13:13:00 -0700 (PDT) 

Date: Tue, 24 Sep 1996 13:13:00 -0700 (PDT)
From: Turner Fay <fst@ITS.NLC-BNC.CA>
Subject: FW: GILS Profile Version 2 Changes
To: GILS Forum <gils@cni.org>
Message-Id: <324840D4@its.nlc-bnc.ca>


Hi Eliot,

As you suggested I printed out the latest draft of version 2 and reviewed 
Time Period and Available Time Period.


> I've used "beginningDate" and "endingDate" as tags because those are 
> the tags already in use in the Geospatial Profile. Note also that we 
> have only a date although we call it "time". Shouldn't we also say 
> that the format is ISO 8601 as it is for Date Of Publication 
> Structured? If we want time, the format would be YYYYMMDDTHHMMSS, 
> where "T" is literraly a capital "T".
>
> I think we may also want to say which of the two dates should be used 
> when the intent is to indicate just one date.

Comments (really picky ones):

1. The definition for Time Period says that this element provides time 
frames ..., in one of two forms:
....
This implies that the record creator must make a choice in using the 
structured or textual format.  However I think that both can be used in 
a record and this is supported in the NARA guidelines and the Canadian 
guidelines.  Can you change the wording to indicate that at least one or 
both forms can be used. (same for Available Time Period).

2. I  note that you have reversed the sequence of Time Period Structured 
and Time Period Textual.  Structured now comes first.  Was there a reason 
for the reversal? Even though Structured now has subelements this in no 
way should affect machine processing of this subelement.  However, by 
reversing the two subelements, you are imposing a requirement that record 
creation tools that have been developed for GILS activity change their 
user interface, forms, display output, etc.  I suggest going back to the 
original sequence.  (same for Available Time Period).

3. You could add to the definition for Time Period that if Time Period 
Structured is used, then at least the Beginning Date must be supplied. 
(same for Available Time Period).

4. I have not looked closely at ISO 8601 or the MARC format for dates 
prior to AD.1.  In the Can. Guidelines I specify the use of ISO 8601 
for AD dates and the format used with in the NARA Guidelines for other 
types of dates, e.g. B.C. Era to 9999 B.C.  which are based on the 
Content Standards for Digital Geospatial Metadata.  All this date stuff 
is really outside my expertise.

5. If Time (hours, min., secs.) is really required by a certain community 
of GILS users , e.g. Geographic, geospatial, can't this element be made 
a local one?

Fay
Fay Turner
Information Technology Services
National Library of Canada

e-mail:  fay.turner@nlc-bnc.ca
tel:        (819) 994-6830

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