[DDI-SRG] Updated 2.1 to 3.0 mapping UPDATE

[Sanda Ionescu]

Hi, Wendy.

As I look at your 2->3 mapping, I have a "philosophical" question:
Is this an "ideal world" mapping, meaning - this is how we would map the
2.1 fields if we could (or if we did the conversion manually, or
semi-manually?); or, is it supposed to have a practical application
(i.e. specs for a conversion tool)?

And this is the reason I'm asking: as I'm sure you know, I attempted a
mapping myself this past summer, with the practical intention of
building a conversion stylesheet. So I had to figure out what the
stylesheet would do. In some instances I found out that even though a
theoretical mapping was possible, it was not feasible in practice.
Examples would be "concept" and "universe" at variable level - if we
created an entry for each concept and universe statement found under
variables, we would end up with identical entries repeated at nauseam in
the schemes, with the same content but different IDs! We would also be
unable to use the in-built hierarchy in the universe scheme, since a
machine would not be able to establish whether a certain universe
(expressed in 2.1 as a string) is a child of another, or else. The same
thing applies to some of the responsibility statements in DDI 2.1 - we
may have the same organization as author, producer, distributor, and if
we created organization entries for each time it appears, we would end
up with a lot of redundant entries in the Organizations Scheme.

So, to me it is important at this point to establish whether we plan to
release an "ideal" mapping, or a "practical" mapping, because this
knowledge would inform my evaluation of the current mapping.

Thank you so much.
Sanda.

Sanda Ionescu
ICPSR
University of Michigan
P.O. Box 1248
Ann Arbor, MI 48106

Phone, Fax: 734-615-7890 

-----Original Message-----
From: Wendy Thomas [mailto:wlt at pop.umn.edu] 
Sent: Monday, January 12, 2009 5:59 PM
To: TIC list
Cc: Sanda Ionescu; tassoukis at iza.org; askitas at iza.org; Mary Vardigan
Subject: Re: Updated 2.1 to 3.0 mapping UPDATE

In working with the mapping I have already found and corrected the 
following errors:

VersionResponsibiliyt  corrected spelling to Responsibility
subTitl should be ../r:SubTitle  not r:Title
altTitl should be ../r:AlternateTitle  not r:Title
pPhysicalDataStructure should be p:PhysicalDataStructure
r:FundingInformation/r:Role should be r:FundingInformation at role
r:GrantNumber/r:Role should be r:GrantNumber at role
COMPLETED CONTENT FOR 1.2 and 1.3 as follows
1.2	guide?	PCDATA 
s:StudyUnit/l:LogicalProduct/l:DataRelationship/r:Description 
r:Description	r:StructuredStringType	Initial home will need to be 
parsed
1.3	docStatus?	PCDATA	s:StudyUnit/r:VersionRationale 
r:VersionRational	r:InternationalStringType



Wendy L. Thomas                          Phone: +1 612.624.4389
Data Access Core Director		 Fax:   +1 612.626.8375
Minnesota Population Center              Email: wlt at pop.umn.edu
University of Minnesota
50 Willey Hall
225 19th Avenue South
Minneapolis, MN 55455