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<!--
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'$RCSfile$'
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Copyright: 2000 Regents of the University of California and the
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National Center for Ecological Analysis and Synthesis
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For Details: http://knb.ecoinformatics.org/
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'$Author: jones $'
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'$Date: 2001-10-22 09:46:55 -0700 (Mon, 22 Oct 2001) $'
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'$Revision: 853 $'
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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-->
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<!-- EML DTD document that defines the
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characteristics of all attributes in a dataset. -->
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<!-- The root element, which represents a list of attributes in a dataset -->
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<!ELEMENT eml-attribute (identifier, attribute+)>
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<!-- File identifier of the metadata document -->
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<!ELEMENT identifier (#PCDATA)>
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<!ATTLIST identifier
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system CDATA #IMPLIED
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>
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<!-- Attribute element is a descriptor of an attribute in the dataset
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identified by its name. -->
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<!ELEMENT attribute (attributeName, attributeLabel*, attributeDefinition, unit?, dataType?, attributeDomain, missingValueCode*, precision?)>
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<!-- Attribute name -->
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<!ELEMENT attributeName (#PCDATA)>
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<!-- Attribute label -->
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<!ELEMENT attributeLabel (#PCDATA)>
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<!-- Precise definition of attributes in data set -->
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<!ELEMENT attributeDefinition (#PCDATA)>
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<!-- Unit -->
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<!ELEMENT unit (#PCDATA)>
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<!-- data type; Integer, floating point, character, string -->
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<!ELEMENT dataType (#PCDATA)>
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<!-- Domain of the attribute -->
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<!ELEMENT attributeDomain (enumeratedDomain+ | rangeDomain+)>
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<!-- Description of any codes associated with attributes -->
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<!ELEMENT enumeratedDomain (code, definition, source?)>
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<!ELEMENT code (#PCDATA)>
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<!-- List and definition of attribute codes -->
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<!ELEMENT definition (#PCDATA)>
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<!-- Source of attribute codes -->
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<!ELEMENT source (#PCDATA)>
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<!-- Range for numeric values -->
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<!ELEMENT rangeDomain (minimum?, maximum?)>
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<!ELEMENT minimum (#PCDATA)>
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<!ELEMENT maximum (#PCDATA)>
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<!-- Character used to represent missing data -->
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<!ELEMENT missingValueCode (#PCDATA)>
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<!-- Precision; number of significant digits -->
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<!ELEMENT precision (#PCDATA)>
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<!-- End of file -->
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