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hiddentrue

What  elements are identical for metadata records produced by a particular group?

The ISO metadata standards include many elements that are identical for many of the metadata records produced by a particular group. These boilerplate elements can be defined in templates that can be used to start metadata records being created by members of those groups. Useful boilerplate might include these elements:

 

File Identifier:

ISO 19115-2

Code Block
<gmd:fileIdentifier>
     <gco:CharacterString>namespace:identifier</gco:CharacterString>
</gmd:fileIdentifier>

Note: ISO 19115-2 identified metadata records using a single character string that often times had to be overloaded to include the information required for unambiguous identification. ISO 19115-1 replaces the CharacterString element with an MD_Identifier object, which includes code and codeSpace fields.  The combination of code and codeSpace fields ensue unambiguous file identification.

ISO 19115-1

Code Block
<mdb:metadataIdentifier>
      <mcc:MD_Identifier>
         <mcc:code>
            <gco:CharacterString>fileIdentifier</gco:CharacterString>
         </mcc:code>
         <mcc:codeSpace>
           <gco:CharacterString>fileIdentifierNamespace</gco:CharacterString>
         </mcc:codeSpace>
      </mcc:MD_Identifier>
   </mdb:metadataIdentifier>

Metadata and Resource Language and CharacterSet:

ISO 19115-2

Code Block
<gmd:language>
  <gco:CharacterString>eng; USA</gco:CharacterString>
</gmd:language>

Note: ISO 19115 specified the language with a CharacterString element.  ISO 19115-1 replaces the CharacterString element with the defaultLocale/PT_Locale object.  The PT_Locale object includes fields for Language, Country, and CharacterSet codes, which provide a more detailed language description.  ISO 19115-1 also supports documenting additional languages with the otherLocale/PT_Locale object.

Code Block
<gmd:characterSet>
  <gmd:MD_CharacterSetCode
   codeList="codeListLocation#MD_CharacterSetCode"
 codeListValue="utf8">utf8</gmd:MD_CharacterSetCode>
</gmd:characterSet>

ISO 19115-1

Code Block
<mdb:defaultLocale>
    <lan:PT_Locale>
        <lan:language>
            <lan:LanguageCode codeList="codeListLocation#LanguageCode"
                codeListValue="eng; USA">eng; USA</lan:LanguageCode>
        </lan:language>
        <lan:characterEncoding>
            <lan:MD_CharacterSetCode
             codeList="codeListLocation#MD_CharacterSetCode"
             codeListValue="UTF8">UTF8</lan:MD_CharacterSetCode>
        </lan:characterEncoding>
    </lan:PT_Locale>
</mdb:defaultLocale>

Note: ISO 19115-1 groups the CharacterSetCode with the LanguageCode, and CountryCode  in the PT_Locale object.

Hierarchy Level:

ISO 19115-2

Code Block
<gmd:hierarchyLevel>
  <gmd:MD_ScopeCode
   codeList="codeListLocation#MD_ScopeCode"
   codeListValue="dataset">dataset</gmd:MD_ScopeCode>
</gmd:hierarchyLevel>

Note:  ISO 19115 included any number of hierarchyLevels and hierarchyLevelNames. In cases with multiple occurrences of each, it was impossible to associate a given hierarchyLevel with the correct hierarchyLevelName. ISO 19115-1 addresses this ambiguity with the MD_MetadataScope object that unambiguously associates a MD_ScopeCode and the correct name.

ISO 19115-1

Code Block
<mdb:metadataScope>
   <mdb:MD_MetadataScope>
      <mdb:resourceScope>
         <mcc:MD_ScopeCode codeList="codeListLocation#MD_ScopeCode"
          codeListValue="dataset">dataset</mcc:MD_ScopeCode>
      </mdb:resourceScope>
      <mdb:name>
         <gco:CharacterString>LevelName</gco:CharacterString>
      </mdb:name>
   </mdb:MD_MetadataScope>
</mdb:metadataScope>

Metadata Date:

ISO 19115-2

Code Block
<gmd:dateStamp>
  <gco:Date>YYYY-MM-DD</gco:Date>
</gmd:dateStamp>

Note:  ISO 19115 includes a dateStamp for documenting the creation/revision time for the metadata.  Many other times can be important in the history of metadata maintenance. ISO 19115-1 replaces the datestamp/Date field with the dateinfo/CI_Date object, which enables the type of date to be specified.  ISO 19115-1 expands the date type codelist from 3 values to 16.

ISO 19115-1

Code Block
<mdb:dateInfo>
   <cit:CI_Date>
      <cit:date>
         <gco:DateTime>2111-11-11T11:11:11</gco:DateTime>
      </cit:date>
      <cit:dateType>
         <cit:CI_DateTypeCode codeList="codeListLocation#CI_DateTypeCode"
          codeListValue="creation">creation</cit:CI_DateTypeCode>
      </cit:dateType>
   </cit:CI_Date>
</mdb:dateInfo>

Metadata Standard Name and Version:

ISO 19115-2

Code Block
<gmd:metadataStandardName>
  <gco:CharacterString>ISO 19115-2 Geographic Information - Metadata Part 2
   Extensions for imagery and gridded data</gco:CharacterString>
</gmd:metadataStandardName>
<gmd:metadataStandardVersion>
  <gco:CharacterString>ISO 19115-2:2009(E)</gco:CharacterString>
</gmd:metadataStandardVersion>

Note:  ISO 19115 includes CharacterStrings for specifying the metadata standard and version being used.  ISO 19115-1 introduces multiple CI_Citations for the metadata standard(s) and profile(s) included in a metadata record. This provides more specific information about the source of the metadata standard and acknowledges that a single record can support multiple standards (e.g. 19115-1, 19115-2, and 19157) and profiles.

ISO 19115-1

Code Block
<mdb:metadataStandard>
   <cit:CI_Citation>
      <cit:title>
        <gco:CharacterString>Standard Title</gco:CharacterString>
      </cit:title>
      <cit:edition>
        <gco:CharacterString>Standard Edition</gco:CharacterString>
      </cit:edition>
   </cit:CI_Citation>
</mdb:metadataStandard>

Reference System Information:

ISO 19115-2

Many global environmental datasets use a simple latitude/longitude reference system referred to as WGS 84 or EPSG:4326. This gmd:referenceSystemInfo describes that reference system as a RS_Identifier with a code and an authority of the European Petroleum Survey Group (EPSG).

Code Block
<gmd:referenceSystemInfo>
    <gmd:MD_ReferenceSystem>
        <gmd:referenceSystemIdentifier>
            <gmd:RS_Identifier>
                <gmd:authority>
                    <gmd:CI_Citation>
                        <gmd:title>
                            <gco:CharacterString>European Petroleum Survey Group (EPSG)
                             Geodetic Parameter Registry</gco:CharacterString>
                        </gmd:title>
                        <gmd:date>
                            <gmd:CI_Date>
                                <gmd:date>
                                    <gco:Date>2008-11-12</gco:Date>
                                </gmd:date>
                                <gmd:dateType>
                                    <gmd:CI_DateTypeCode
                                     codeList="codeListLocation#CI_DateTypeCode"
                                     codeListValue="publication">
                                     publication</gmd:CI_DateTypeCode>
                                </gmd:dateType>
                            </gmd:CI_Date>
                        </gmd:date>
                        <gmd:citedResponsibleParty>
                            <gmd:CI_ResponsibleParty>
                                <gmd:organisationName>
                                    <gco:CharacterString>European Petroleum Survey Group</gco:CharacterString>
                                </gmd:organisationName>
                                <gmd:contactInfo>
                                    <gmd:CI_Contact>
                                        <gmd:onlineResource>
                                            <gmd:CI_OnlineResource>
                                                <gmd:linkage>
                                                    <gmd:URL>http://www.epsg-registry.org/</gmd:URL>
                                                </gmd:linkage>
                                            </gmd:CI_OnlineResource>
                                        </gmd:onlineResource>
                                    </gmd:CI_Contact>
                                </gmd:contactInfo>
                                <gmd:role gco:nilReason="missing"/>
                            </gmd:CI_ResponsibleParty>
                        </gmd:citedResponsibleParty>                            
                    </gmd:CI_Citation>
                </gmd:authority>
                <gmd:code>
                  <gco:CharacterString>urn:ogc:def:crs:EPSG:4326</gco:CharacterString>
                </gmd:code>
                <gmd:version>
                    <gco:CharacterString>6.18.3</gco:CharacterString>
                </gmd:version>
            </gmd:RS_Identifier>
        </gmd:referenceSystemIdentifier>
    </gmd:MD_ReferenceSystem>
</gmd:referenceSystemInfo>

Note: ISO 19115-1 replaces the RS_Identifier with an MD_Identifier and that the online resource has moved out of the contact information and into the citation.

ISO 19115-1

Code Block
   <mdb:referenceSystemInfo>
      <mrs:MD_ReferenceSystem>
         <mrs:referenceSystemIdentifier>
            <mcc:MD_Identifier>
               <mcc:authority>
                  <cit:CI_Citation>
                     <cit:title>
                        <gco:CharacterString>European Petroleum Survey Group (EPSG) Geodetic Parameter Registry</gco:CharacterString>
                     </cit:title>
                     <cit:date>
                        <cit:CI_Date>
                           <cit:date>
                              <gco:DateTime>2008-11-12T00:00:00</gco:DateTime>
                           </cit:date>
                           <cit:dateType>
                              <cit:CI_DateTypeCode codeList="codeListLocation#CI_DateTypeCode" codeListValue="publication">publication</cit:CI_DateTypeCode>
                           </cit:dateType>
                        </cit:CI_Date>
                     </cit:date>
                     <cit:citedResponsibleParty>
                        <cit:CI_Responsibility>
                           <cit:role>
                              <cit:CI_RoleCode codeList="codeListLocation#CI_RoleCode" codeListValue="pointOfContact">pointOfContact</cit:CI_RoleCode>
                           </cit:role>
                           <cit:party>
                              <cit:CI_Organisation>
                                 <cit:name>
                                    <gco:CharacterString>European Petroleum Survey Group</gco:CharacterString>
                                 </cit:name>
                                 <cit:contactInfo>
                                    <cit:CI_Contact>
                                       <cit:onlineResource>
                                          <cit:CI_OnlineResource>
                                             <cit:linkage>
                                                <gco:CharacterString>http://www.epsg-registry.org/</gco:CharacterString>
                                             </cit:linkage>
                                          </cit:CI_OnlineResource>
                                       </cit:onlineResource>
                                    </cit:CI_Contact>
                                 </cit:contactInfo>
                              </cit:CI_Organisation>
                           </cit:party>
                        </cit:CI_Responsibility>
                     </cit:citedResponsibleParty>
                     <cit:onlineResource>
                        <cit:CI_OnlineResource>
                           <cit:linkage>
                              <gco:CharacterString>http://www.epsg-registry.org/</gco:CharacterString>
                           </cit:linkage>
                        </cit:CI_OnlineResource>
                     </cit:onlineResource>
                  </cit:CI_Citation>
               </mcc:authority>
               <mcc:code>
                  <gco:CharacterString>urn:ogc:def:crs:EPSG:4326</gco:CharacterString>
               </mcc:code>
               <mcc:version>
                  <gco:CharacterString>6.18.3</gco:CharacterString>
               </mcc:version>
            </mcc:MD_Identifier>
         </mrs:referenceSystemIdentifier>
      </mrs:MD_ReferenceSystem>
   </mdb:referenceSystemInfo>

Resource and Metadata Constraints:

Many datasets distributed by U.S. Federal Agencies have no restrictions on their use. They do, however, include a standard disclaimer. This disclaimer is added to the boilerplate in the resourceConstraints and metadataConstraints:

<gmd:resourceConstraints> or <gmd:metadataConstraints>
  <gmd:MD_Constraints>
    <gmd:useLimitation>
      <gco:CharacterString>Disclaimer - While every effort has been made to ensure that these data are
          accurate and reliable within the limits of the current state of the art, NASA cannot assume
          liability for any damages caused by any errors or omissions in the data, nor as a result of the
          failure of the data to function on a particular system. NASA makes no warranty, expressed or
          implied, nor does the fact of distribution constitute such a warranty.</gco:CharacterString>
    </gmd:useLimitation>
  </gmd:MD_Constraints>
</gmd:resourceConstraints> or </gmd:metadataConstraints>

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