[Eac-l] proposed changes to %a.ea
stephen.yearl at yale.edu
Tue Nov 9 10:36:13 EST 2004
Currently the EAC DTD has the following defined parameter entity:
<!ENTITY % a.ea
'ea NMTOKEN #IMPLIED'>
Which I would like you to consider rewritten as:
<!ENTITY % a.ea
'ea CDATA #IMPLIED
easys NMTOKEN #IMPLIED'>
There are two changes here:
1. ea is now CDATA instead of NMTOKEN.
This would allows the specification of an xpath-- or other-- expressions
for those descriptive resources that do not have unambiguous identifiers.
It would also permit the common | delimiter between a MARC field and its
2. a (new) attribute easys (abbreviated from encoding analog system) may
now appear in all locations that @ea can appear.
Currently the only location where one may specify an encoding analog system
is using @encodinganalogsystem on <eacheader>. I venture that in a complex
EAC instance resources and information from many different systems and
vocabularies can be employed, each one mapping to a different
encodinganalog. The new attribute locally qualifies and allows for cleaner
interpretation of @ea's value. In <resourcerels>, for instance, one will
switch in and out of various encoding analog systems when describing
resources: MARC data in <bibunit>, EAD data in <archunit>, and so forth.
Here is a fragmentary example to better illustrate the proposed change:
<resourcerel reltype="origination" easys="MARC21" ea="035|a" type="monograph"
<title ea="245"> Television and antisocial behavior:
field experiments [by]
Stanley Milgram [and] R. Lance Shotland.</title>
<publisher ea="260|b"> Academic Press.</publisher>
<place ea="260|a">New York, NY</place>
<resourcerel reltype="origination" easys="EAD2002"
ea="ead/archdesc/did" type="manuscript collection"
<unittitle> Stanley Milgram papers,<unitdate
<extent>90.25 linear ft. (156 boxes)</extent>
<repository>Yale University Library, Manuscripts and
<abstract> The papers consist of correspondence,
research and data files,
writings, and course material, which document
Stanley Milgram's work as an
innovative researcher and teacher in the field of
social psychology. The
papers highlight Milgram's work on obedience to
violence, urban psychology, and communication patterns
To parallel easys, I'd also suggest that <eacheader'>s
@encodinganalogsystem also be shortened to this abbreviated form.
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