Metacat

<!--

  * Ecological Metadata Language (EML) - General data set descriptors

  *

  *      Authors: Matt Jones, Zheng Wang, and Noah Goldstein

  * Organization: National Center for Ecological Analysis and Synthesis

  *  For Details: http://www.nceas.ucsb.edu/

  *      Created: 1997 August 19

  *     Modified: 1999 June 23

  *      Version: 1.4

  *    File Info: '$Id: eml-dataset.dtd 808 2001-07-25 15:57:31Z berkley $'

  *

  * Ecological Metadata Language is a general purpose metadata content

  * specification for documenting ecological data.  The specification 

  * consists of a series of modular document type definitions (DTD) that 

  * provide metadata content descriptors. It describes the owner and  

  * contents of the dataset  (eml-dataset.dtd), the research context in 

  * which it was created (eml-context.dtd), the structural 

  * characteristics of data files (eml-file.dtd), the 

  * characteristics of variables in a file (eml-variable.dtd), current 

  * status of data and metadata files (eml-status.dtd), access control 

  * rules regarding the data  and metadata (eml-access.dtd), software 

  * information (eml-software) and a variety of miscellaneous 

  * supplemental descriptors (eml-supplement.dtd).

  * 

  * Files generated under the structural constraints of eml are

  * plain-text files and therefore are editable in ordinary

  * text-processors.  However, these DTDs are intended for use within 

  * general purpose metadata editors, and within a more specific 

  * metadata editor being developed at NCEAS for the ecological 

  * community.  This metadata editor will provide facilities for 

  * version control and efficient metadata entry.  

  * The purpose of this specification was to formalize the 

  * Michener et al. work in a structured language to examine its 

  * application to ecological data in a controlled manner.

  *

  * This specification was based on the work of the Ecological Society 

  * of America's Committee on the Future of Long Term Data, and more

  * specifically on a related paper, Michener et al., 1997. See:

  * Michener, William K., et al., 1997. Ecological Appications,

  * "Nongeospatial metadata for the ecological sciences"

  * Vol 7(1). pp. 330-342.

  *

  * Where appropriate, we have used elements of the ISO/TC 211 draft 

  * standard - the ISO Geographic information/Geomatics standard, 

  * which includes xml code, as well as ISO 8601 schema. Some elements 

  * in the ISO/TC 211 were expanded to allow for greater 

  * resolution.

  *

  * For an explanation of the classes of metadata and elements defined 

  * below, see Michener et al. 1997. In particular, the numbered comment 

  * labels found below refer to Table 1 (pp. 336-337) of Michener 

  * et al. 1997. In addition, each of the principal elements in the 

  * specification is accompanied by a FIXED attribute called "description"

  * that provides a brief description of the content of the element. These

  * descriptions are derived from Michener et al. 1997.

  *

-->

<!--   *     *     *      *

        CLASS I - DATA SET DESCRIPTORS and PACKAGE

       *     *     *      *

        -->

<!-- Class 1 -->

<!ELEMENT eml-dataset (meta_file_id, dataset_id, title+, originator+, abstract?, keyword_info*,relations+)>

<!ATTLIST eml-dataset description CDATA #FIXED "Overall description of data set"

                      longdesc CDATA #FIXED "Data set">

<!-- Class 1.B -->

<!ELEMENT meta_file_id (#PCDATA)>

<!ATTLIST meta_file_id description CDATA #FIXED "Unique identifier of this metadata record">

<!ELEMENT dataset_id (#PCDATA)>

<!ATTLIST dataset_id description CDATA #FIXED "Unique identifier of the data set the meta-data describes">

<!-- Class 1.A -->

<!ELEMENT title (#PCDATA)>

<!ATTLIST title description CDATA #FIXED "Title or theme of data set">

<!-- Class 1.C.1 -->

<!ELEMENT originator (party)>

<!ATTLIST originator description CDATA #FIXED "Names and addresses of principal investigators">

<!ELEMENT party ((party_individual | party_org), meta_address)>

<!ATTLIST party description CDATA #FIXED "Responsible party information">

<!ELEMENT party_individual (salutation*, given_name+, surname, jobtitle*)>

<!ATTLIST party_individual description CDATA #FIXED "Full name of individual">

<!ELEMENT salutation (#PCDATA)>

<!ATTLIST salutation description CDATA #FIXED "Salutation">

<!ELEMENT given_name (#PCDATA)>

<!ATTLIST given_name description CDATA #FIXED "First name">

<!ELEMENT surname (#PCDATA)>

<!ATTLIST surname description CDATA #FIXED "Last Name">

<!ELEMENT jobtitle (#PCDATA)>

<!ATTLIST jobtitle description CDATA #FIXED "Job title">

<!ELEMENT party_org (#PCDATA)>

<!ATTLIST party_org description CDATA #FIXED "Name of organization">

<!ELEMENT meta_address (address*, city?, admin_area*, postal_code?, country, resource_url*, email*, phone*, fax*, tdd_phone*)>

<!ATTLIST meta_address description CDATA #FIXED "Contact information"

                      meta_address_status (current|notcurrent) #REQUIRED

                      meta_address_purpose (mail|institution|homeresidence) #REQUIRED>

<!ELEMENT address (#PCDATA)>

<!ATTLIST address description CDATA #FIXED "Street address">

<!ELEMENT city (#PCDATA)>

<!ATTLIST city description CDATA #FIXED "City">

<!ELEMENT admin_area (#PCDATA)>

<!ATTLIST admin_area description CDATA #FIXED "Administrative area (state, province, territory)">

<!ELEMENT postal_code (#PCDATA)>

<!ATTLIST postal_code description CDATA #FIXED "Postal code">

<!ELEMENT country (#PCDATA)>

<!ATTLIST country description CDATA #FIXED "Country">

<!ELEMENT resource_url (#PCDATA)>

<!ATTLIST resource_url description CDATA #FIXED "URL">

<!ELEMENT email (#PCDATA)>

<!ATTLIST email description CDATA #FIXED "Email address">

<!ELEMENT phone (country_code?,area_code?,local_code, extension?)>

<!ATTLIST phone description CDATA #FIXED "Phone number">

<!ELEMENT fax (country_code?,area_code?,local_code)>

<!ATTLIST fax description CDATA #FIXED "Facimilie telephone">

<!ELEMENT tdd_phone (country_code?,area_code?,local_code)>

<!ATTLIST tdd_phone description CDATA #FIXED "TDD/TTY telephone">

<!ELEMENT country_code (#PCDATA)>

<!ATTLIST country_code description CDATA #FIXED "Countrycode">

<!ELEMENT area_code (#PCDATA)>

<!ATTLIST area_code description CDATA #FIXED "Area code">

<!ELEMENT local_code (#PCDATA)>

<!ATTLIST local_code description CDATA #FIXED "Local phone code">

<!ELEMENT extension (#PCDATA)>

<!ATTLIST extension description CDATA #FIXED "Phone extension code">

<!-- Class 1.C.2 -->

<!ELEMENT abstract (paragraph+)>

<!ATTLIST abstract description CDATA #FIXED "Descriptive abstract"> 

<!ELEMENT paragraph (#PCDATA)>

<!ATTLIST paragraph description CDATA #FIXED "Paragraph of text">

<!-- Class 1.D -->

<!ELEMENT keyword_info (keyword+, keyword_thesaurus?)>

<!ATTLIST keyword_info keywordtype (spatial|temporal|thematic|stratum|discipline) #REQUIRED

                       description CDATA #FIXED "Spatial, temporal, thematic, stratum, or discipline keyword value">

<!ELEMENT keyword (#PCDATA)>

<!ATTLIST keyword description CDATA #FIXED "Common-use word or phrase used to describe the subject of the dataset">

<!ELEMENT keyword_thesaurus (#PCDATA)>

<!ATTLIST keyword_thesaurus description CDATA #FIXED "Name of the formally registered thesaurus or a similar athouritative source of keywords">

<!ELEMENT relations EMPTY>

<!ATTLIST relations 

        object ENTITY #REQUIRED

	    relation  CDATA "is-metadata-for"

        target CDATA #REQUIRED

>

<!-- End of file -->