Metacat

<!--

  * Ecological Metadata Language (EML) - Status 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: '$Id$'

  *

  * 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 III A - DATA SET STATUS

        *      *      *      *

        -->

<!-- Class 3.A -->

<!ELEMENT eml-status (meta_file_id, data_update_date?, data_archive_date?, metadata_update_date?, qa_qc_status?)>

<!ATTLIST eml-status description CDATA #FIXED "Data set status">

<!ELEMENT meta_file_id (#PCDATA)>

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

<!-- Class 3.A.1 -->

<!ELEMENT data_update_date (datetime)>

<!ATTLIST data_update_date description CDATA #FIXED "Date of modification of data set">

<!ELEMENT datetime (year?, month?, day?, hour?, minute?, second?, second_fraction?, time_zone_designator?)>

<!ATTLIST datetime description CDATA #FIXED "Date and time as designated in ISO 8601">

<!ELEMENT year (#PCDATA)>

<!ATTLIST year description CDATA #FIXED "Year in YYYY format">

<!ELEMENT month (#PCDATA)>

<!ATTLIST month description CDATA #FIXED "Month in MM format">

<!ELEMENT day (#PCDATA)>

<!ATTLIST day description CDATA #FIXED "Day of month in DD format">

<!ELEMENT hour (#PCDATA)>

<!ATTLIST hour description CDATA #FIXED "Hour in hh">

<!ELEMENT minute (#PCDATA)>

<!ATTLIST minute description CDATA #FIXED "Minute in mm">

<!ELEMENT second (#PCDATA)>

<!ATTLIST second description CDATA #FIXED "Seconds in ss">

<!ELEMENT second_fraction (#PCDATA)>

<!ATTLIST second_fraction description CDATA #FIXED "One or more digits representing a decimal fraction of a second">

<!ELEMENT time_zone_designator (#PCDATA)>

<!ATTLIST time_zone_designator description CDATA #FIXED "Time zone designator">

<!-- Class 3.A.2 -->

<!ELEMENT data_archive_date (datetime)>

<!ATTLIST data_archive_date description CDATA #FIXED "Date of last data set archival">

<!-- Class 3.A.3 -->

<!ELEMENT metadata_update_date (datetime)>

<!ATTLIST metadata_update_date description CDATA #FIXED "Date of last metadata update and current status">

<!-- Class 3.A.4 -->

<!ELEMENT qa_qc_status (paragraph+)>

<!ATTLIST qa_qc_status description CDATA #FIXED "Status of data quality assurance checking">

<!ELEMENT paragraph (#PCDATA)>

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

<!-- End of file -->