DCAT vocabulary specification updated
authorfmaali
Sat, 09 Mar 2013 16:43:54 +0000
changeset 387 901a10d6b01a
parent 386 37741a001e5e
child 388 5fa9a44f767c
DCAT vocabulary specification updated
dcat/dcat-model.jpg
dcat/index.html
Binary file dcat/dcat-model.jpg has changed
--- a/dcat/index.html	Sat Mar 09 13:01:34 2013 +0000
+++ b/dcat/index.html	Sat Mar 09 16:43:54 2013 +0000
@@ -203,7 +203,7 @@
 </section>
 
 <section>
-<h2 id="">A dataset available only behind some Web page</h2>
+<h2 id="example-landing-page">A dataset available only behind some Web page</h2>
 <p>:dataset-002 is available as a CSV file. However :dataset-002 can only be obtained through some Web page 
 where the user needs to click some links, provide some information and check some boxes 
 before accessing the data</p>
@@ -224,7 +224,7 @@
 </section>
 
 <section>
-<h2 id="">A dataset available as download and behind some Web page</h2>
+<h2 id="example-landing-page-download">A dataset available as download and behind some Web page</h2>
 <p>On the other hand, :dataset-003 can be obtained through some landing page but also can be downloaded from a known URL.
 </p>
 <pre>  &nbsp;:dataset-003 
@@ -259,7 +259,72 @@
 </table>
 
 <section>
-<h3 id="Property:_homepage">Property: homepage</h3>
+<h3 id="Property:catalog_title">Property: title</h3>
+<p>A name given to the catalog.</p>
+<table class="definition">
+  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/title">dcterms:title</a></th></tr></thead>
+  <tbody>
+    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2000/01/rdf-schema#Literal">rdfs:Literal</a></td></tr>
+  </tbody>
+</table>
+</section>
+
+<section>
+<h3 id="Property:catalog_description">Property: description</h3>
+<p>free-text account of the catalog.</p>
+<table class="definition">
+  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/description">dcterms:description</a></th></tr></thead>
+  <tbody>
+    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2000/01/rdf-schema#Literal">rdfs:Literal</a></td></tr>
+  </tbody>
+</table>
+</section>
+
+<section>
+<h3 id="Property:catalog_release_date">Property: release date</h3>
+<p>Date of formal issuance (e.g., publication) of the catalog.</p>
+<table class="definition">
+  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/issued">dct:issued</a></th></tr></thead>
+  <tbody>
+    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2000/01/rdf-schema#Literal">rdfs:Literal</a> typed as <a href="http://www.w3.org/TR/xmlschema-2/#date">xsd:date</a>. The date is encoded as a literal in "YYYY-MM-DD" form (<a href="http://www.w3.org/TR/NOTE-datetime">ISO 8601 Date and Time Formats</a>). If the specific day or month are not known, then 01 should be specified.</td></tr>
+    <tr><td class="prop">See also:</td><td><a href="#dataset_release_date" title=""> dataset release date</a>, <a href="#record_release_date" title=""> catalog record listing date</a> and <a href="#distribution_release_date" title=""> distribution release date</a></td></tr>
+  </tbody>
+</table>
+</section>
+
+<section>
+<h3 id="Property:catalog_update_date">Property: update/modification date</h3>
+<p>Most recent date on which the catalog was changed, updated or modified.</p>
+<table class="definition">
+  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/modified">dcterms:modified</a></th></tr></thead>
+  <tbody>
+    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2000/01/rdf-schema#Literal">rdfs:Literal</a> typed as <a href="http://www.w3.org/TR/xmlschema-2/#date">xsd:date</a>. The date is encoded as a literal in "YYYY-MM-DD" form (<a href="http://www.w3.org/TR/NOTE-datetime">ISO 8601 Date and Time Formats</a>). If the specific day or month are not known, then 01 should be specified.</td></tr>
+    <tr><td class="prop">See also:</td><td><a href="#dataset_update_date" title=""> dataset modification date</a>, <a href="#record_update_date" title=""> catalog record modification date</a> and <a href="#distribution_update_date" title=""> distribution modification date</a></td></tr>
+  </tbody>
+</table>
+</section>
+
+<section>
+<h3 id="Property:catalog_language">Property: language</h3>
+<p>The language of the catalog. This refers to the language used in the textual metadata describing titles, descriptions, etc. of the datasets in the catalog.</p>
+
+<table class="definition">
+  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/language">dct:language</a></th></tr></thead>
+  <tbody>
+    <tr><td class="prop">Range:</td><td>
+    <a href="http://www.w3.org/2000/01/rdf-schema#Resource">rdfs:Resource</a>
+    <br/>
+    Resources defined by the Library of Congress (<a href="http://id.loc.gov/vocabulary/iso639-1.html">1</a>,
+     <a href="http://id.loc.gov/vocabulary/iso639-2.html">2</a>) SHOULD be used.
+  <br/>
+If a ISO 639-1 (two-letter) code is defined for language, then its corresponding IRI SHOULD be used; if no ISO 639-1 code is defined, then IRI corresponding to the ISO 639-2 (three-letter) code SHOULD be used.</td></tr>
+    <tr><td class="prop">Usage note:</td><td>Multiple values can be used. The publisher might also choose to describe the language on the dataset level (see <a href="#Property:dataset_language">dataset language</a>).</td></tr>
+  </tbody>
+</table>
+</section>
+
+<section>
+<h3 id="Property:catalog_homepage">Property: homepage</h3>
 <p>The homepage of the catalog.</p>
 
 <table class="definition">
@@ -273,30 +338,32 @@
 
 
 <section>
-<h3 id="Property:_publisher">Property: publisher</h3>
+<h3 id="Property:catalog_publisher">Property: publisher</h3>
 <p>The entity responsible for making the catalog online.</p>
 
 <table class="definition">
   <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/publisher">dcterms:publisher</a></th></tr></thead>
   <tbody>
-    <tr><td class="prop">Range:</td><td><a href="http://xmlns.com/foaf/0.1/Agent">foaf:Agent</a></td></tr>
+    <tr><td class="prop">Usage note:</td><td>Resources of type <a href="http://xmlns.com/foaf/0.1/Agent">foaf:Agent</a> 
+    are recommended as values for this property.</td></tr>
+    <tr><td class="prop">See also:</td><td><a href="Class:_Organization.2FPerson">Class: Organization/Person</a></td></tr>
   </tbody>
 </table>
 </section>
 
 <section>
-<h3 id="Property:_spatial.2Fgeographic_coverage">Property: spatial/geographic </h3>
+<h3 id="Property:catalog_spatial">Property: spatial/geographic </h3>
 <p>The geographical area covered by the catalog.</p>
 <table class="definition">
   <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/spatial">dcterms:spatial</a></th></tr></thead>
   <tbody>
-    <tr><td class="prop">Range:</td><td><a href="http://purl.org/dc/terms/Location">dcterms:Location</a> (Spatial region or named place)</a></td></tr>
+    <tr><td class="prop">Range:</td><td><a href="http://purl.org/dc/terms/Location">dcterms:Location</a></td></tr>
   </tbody>
 </table>
 </section>
 
 <section>
-<h3 id="Property:_themes">Property: themes</h3>
+<h3 id="Property:catalog_themes">Property: themes</h3>
 <p>The knowledge organization system (KOS) used to classify catalog's datasets.</p>
 <table class="definition">
   <thead><tr><th>RDF Property:</th><th><a href="http://www.w3.org/ns/dcat#themeTaxonomy">dcat:themeTaxonomy</a></th></tr></thead>
@@ -307,75 +374,37 @@
 </section>
 
 <section>
-<h3 id="Property:_title">Property: title</h3>
-<p>A name given to the catalog.</p>
+<h3 id="Property:catalog_license">Property: license</h3>
+<p>This describes the license under which the <strong>catalog</strong> can be used/reused and <strong>not the datasets</strong>. 
+Even if the license of the catalog applies to all of its datasets and distributions, it should be replicated on each distribution.</p>
 <table class="definition">
-  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/title">dcterms:title</a></th></tr></thead>
+  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/license">dcterms:license</a></th></tr></thead>
   <tbody>
-    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2000/01/rdf-schema#Literal">rdfs:Literal</a></td></tr>
-  </tbody>
-</table>
-</section>
-
-<section>
-<h3 id="Property:_description">Property: description</h3>
-<p>free-text account of the catalog.</p>
-<table class="definition">
-  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/description">dcterms:description</a></th></tr></thead>
-  <tbody>
-    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2000/01/rdf-schema#Literal">rdfs:Literal</a></td></tr>
+    <tr><td class="prop">Range:</td><td><a href="http://purl.org/dc/dcmitype/LicenseDocument">dctype:LicenseDocument</a></td></tr>
+    <tr><td class="prop">See also:</td><td><a href="#Property:distribution_license">distribution license</a></td></tr>
   </tbody>
 </table>
 </section>
 
 <section>
-<h3 id="Property:_language">Property: language</h3>
-<p>The language of the catalog. This refers to the language used in the textual metadata describing titles, descriptions, etc. of the datasets in the catalog.</p>
-
-<table class="definition">
-  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/language">dct:language</a></th></tr></thead>
-  <tbody>
-    <tr><td class="prop">Range:</td><td>
-    <a href="http://www.w3.org/2000/01/rdf-schema#Resource">rdfs:Resource</a>
-    <br/>
-    Resources defined by the Library of Congress (<a href="http://id.loc.gov/vocabulary/iso639-1.html">1</a>,
-     <a href="http://id.loc.gov/vocabulary/iso639-2.html">2</a>) SHOULD be used 
-  <br/>
-If a ISO 639-1 (two-letter) code is defined for language, then its corresponding IRI SHOULD be used; if no ISO 639-1 code is defined, then IRI corresponding to the ISO 639-2 (three-letter) code SHOULD be used.</td></tr>
-    <tr><td class="prop">Usage note:</td><td>Multiple values can be used. The publisher might also choose to describe the language on the dataset level (see <a href="#Property:_language_2">dataset language</a>).</td></tr>
-  </tbody>
-</table>
-</section>
-
-<section>
-<h3 id="Property:_license">Property: license</h3>
-<p>This describes the license under which the <strong>catalog</strong> can be used/reused and <strong>not the datasets</strong>. Even if the license of the catalog applies to all of its datasets it should be replicated on each dataset.</p>
-<table class="definition">
-  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/license">dcterms:license</a></th></tr></thead>
-  <tbody>
-    <tr><td class="prop">Range:</td><td><a href="http://purl.org/dc/dcmitype/LicenseDocument">dctype:LicenseDocument</a></td></tr>
-    <tr><td class="prop">See also:</td><td><a href="#" title="">dataset license</a></td></tr>
-  </tbody>
-</table>
-</section>
-
-<section>
-<h3 id="Property:_dataset">Property: dataset</h3>
+<h3 id="Property:catalog_dataset">Property: dataset</h3>
 <p>A dataset that is part of the catalog.</p>
 <table class="definition">
   <thead><tr><th>RDF Property:</th><th><a href="http://www.w3.org/ns/dcat#dataset">dcat:dataset</a></th></tr></thead>
   <tbody>
+    <tr><td class="prop">Domain:</td><td><a href="http://www.w3.org/ns/dcat#Catalog">dcat:Catalog</a></td></tr>
     <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/ns/dcat#Dataset">dcat:Dataset</a></td></tr>
   </tbody>
 </table>
 </section>
 
 <section>
-<h3 id="Property:_catalog_record">Property: catalog record</h3>
+<h3 id="Property:catalog_catalog_record">Property: catalog record</h3>
 <p>A catalog record that is part of the catalog.</p>
 <table class="definition">
   <thead><tr><th>RDF Property:</th><th><a href="http://www.w3.org/ns/dcat#record">dcat:record</a></th></tr></thead>
   <tbody>
+    <tr><td class="prop">Domain:</td><td><a href="http://www.w3.org/ns/dcat#Catalog">dcat:Catalog</a></td></tr>
     <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/ns/dcat#CatalogRecord">dcat:CatalogRecord</a></td></tr>
   </tbody>
 </table>
@@ -394,14 +423,37 @@
 </table>
 
 
-<p>In web-based catalogs, the URL of the catalog page should be used as URI for the catalog record <em>if it is a permalink</em>.</p>
-<p>If named graphs are used, all RDF triples describing the catalog record, the dataset, and its distributions, should go into a graph named with the catalog record's URI.</p>
+<p>If a catalog is represented as an RDF Dataset with named graphs [[SPARQL-named-graphs]], 
+then it is appropriate to place the description of each dataset 
+(consisting of all RDF triples that mention the dcat:Dataset, dcat:CatalogRecord, and any of its dcat:Distributions) 
+into a separate named graph. The name of that graph should be the IRI of the catalog record.
+</p>
 
 <section>
-<h3 id="Property:_listing_date">Property: listing date</h3>
+<h3 id="Property:record_title">Property: title</h3>
+<p>A name given to the record.</p>
+<table class="definition">
+  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/title">dcterms:title</a></th></tr></thead>
+  <tbody>
+    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2000/01/rdf-schema#Literal">rdfs:Literal</a></td></tr>
+  </tbody>
+</table>
+</section>
+
+<section>
+<h3 id="Property:record_description">Property: description</h3>
+<p>free-text account of the record.</p>
+<table class="definition">
+  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/description">dcterms:description</a></th></tr></thead>
+  <tbody>
+    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2000/01/rdf-schema#Literal">rdfs:Literal</a></td></tr>
+  </tbody>
+</table>
+</section>
+
+<section>
+<h3 id="Property:record_release_date">Property: listing date</h3>
 <p>The date of listing the corresponding dataset in the catalog.</p>
-
-<p class="issue">See <a href="https://www.w3.org/2011/gld/track/issues/3">Issue-3</a></p>
 <table class="definition">
   <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/issued">dcterms:issued</a></th></tr></thead>
   <tbody>
@@ -414,10 +466,8 @@
 
 
 <section>
-<h3 id="Property:_update.2Fmodification_date">Property: update/modification date</h3>
+<h3 id="Property:record_update_date">Property: update/modification date</h3>
 <p>Most recent date on which the catalog entry was changed, updated or modified.</p>
-<p class="issue">See <a href="https://www.w3.org/2011/gld/track/issues/3">Issue-3</a></p>
-
 <table class="definition">
   <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/modified">dcterms:modified</a></th></tr></thead>
   <tbody>
@@ -429,14 +479,14 @@
 </section>
 
 <section>
-<h3 id="Property:_dataset_2">Property: dataset</h3>
+<h3 id="Property:record_primarytopic">Property: primary topic</h3>
 <p>Links the catalog record to the dcat:Dataset resource described in the record.</p>
 
-<p class="issue">See <a href="https://www.w3.org/2011/gld/track/issues/4">Issue-4</a></p>
 <table class="definition">
   <thead><tr><th>RDF Property:</th><th><a href="http://xmlns.com/foaf/0.1/primaryTopic">foaf:primaryTopic</a></th></tr></thead>
   <tbody>
-    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/ns/dcat#Dataset">dcat:Dataset</a></td></tr>
+    <tr><td class="prop">Usage note:</td><td><a href="http://xmlns.com/foaf/0.1/primaryTopic">foaf:primaryTopic</a> property is functional: 
+    each catalog record can have at most one primary topic i.e. describes one dataset.</td></tr>
   </tbody>
 </table>
 </section>
@@ -456,22 +506,7 @@
 </table>
 
 <section>
-<h3 id="Property:_update.2Fmodification_date_2">Property: update/modification date</h3>
-<p>Most recent date on which the dataset was changed, updated or modified.</p>
-<p class="issue">See <a href="https://www.w3.org/2011/gld/track/issues/3">Issue-3</a></p>
-
-<table class="definition">
-  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/modified">dcterms:modified</a></th></tr></thead>
-  <tbody>
-    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2000/01/rdf-schema#Literal">rdfs:Literal</a> typed as <a href="http://www.w3.org/TR/xmlschema-2/#date">xsd:date</a>. The date is encoded as a literal in "YYYY-MM-DD" form (<a href="http://www.w3.org/TR/NOTE-datetime">ISO 8601 Date and Time Formats</a>). If the specific day or month are not known, then 01 should be specified.</td></tr>
-    <tr><td class="prop">Usage note:</td><td>The value of this property indicates a change to the actual dataset, not a change to the catalog record. An absent value may indicate that the dataset has never changed after its initial publication, or that the date of last modification is not known, or that the dataset is continuously updated. <b>Example:</b> 2010-05-07</td></tr>
-    <tr><td class="prop">See also:</td><td><a href="#Property:_frequency">frequency</a></td></tr>
-  </tbody>
-</table>
-</section>
-
-<section>
-<h3 id="Property:_title_2">Property: title</h3>
+<h3 id="Property:dataset_title">Property: title</h3>
 <p>A name given to the dataset.</p>
 
 <table class="definition">
@@ -483,7 +518,7 @@
 </section>
 
 <section>
-<h3 id="Property:_description_2">Property: description</h3>
+<h3 id="Property:dataset_description">Property: description</h3>
 <p>free-text account of the dataset.</p>
 <table class="definition">
   <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/description">dcterms:description</a></th></tr></thead>
@@ -494,60 +529,87 @@
 </section>
 
 <section>
-<h3 id="Property:_publisher_2">Property: publisher</h3>
-<p>An entity responsible for making the dataset available.</p>
-<p class="issue">See <a href="https://www.w3.org/2011/gld/track/issues/4">Issue-4</a></p>
-
+<h3 id="Property:_release_date">Property: release date</h3>
+<p>Date of formal issuance (e.g., publication) of the dataset.</p>
 <table class="definition">
-  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/publisher">dcterms:publisher</a></th></tr></thead>
+  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/issued">dcterms:issued</a></th></tr></thead>
   <tbody>
-    <tr><td class="prop">Range:</td><td><a href="http://xmlns.com/foaf/0.1/Organization">foaf:Organization</a></td></tr>
-    <tr><td class="prop">See also:</td><td><a href="#Class:_Organization.2FPerson" title="">Class: Organization/Person</a></td></tr>
+    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2000/01/rdf-schema#Literal">rdfs:Literal</a> typed as <a href="http://www.w3.org/TR/xmlschema-2/#date">xsd:date</a>. The date is encoded as a literal in "YYYY-MM-DD" form (<a href="http://www.w3.org/TR/NOTE-datetime">ISO 8601 Date and Time Formats</a>). If the specific day or month are not known, then 01 should be specified.</td></tr>
+    <tr><td class="prop">Usage note:</td><td>This property should be set using the first known date of issuance.</td></tr>
   </tbody>
 </table>
 </section>
 
 <section>
-<h3 id="Property:_release_date">Property: release date</h3>
-<p>Date of formal issuance (e.g., publication) of the dataset.</p>
-<p class="issue">See <a href="https://www.w3.org/2011/gld/track/issues/3">Issue-3</a></p>
+<h3 id="Property:dataset_update_date">Property: update/modification date</h3>
+<p>Most recent date on which the dataset was changed, updated or modified.</p>
 <table class="definition">
-  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/issued">dcterms:issued</a></th></tr></thead>
+  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/modified">dcterms:modified</a></th></tr></thead>
   <tbody>
     <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2000/01/rdf-schema#Literal">rdfs:Literal</a> typed as <a href="http://www.w3.org/TR/xmlschema-2/#date">xsd:date</a>. The date is encoded as a literal in "YYYY-MM-DD" form (<a href="http://www.w3.org/TR/NOTE-datetime">ISO 8601 Date and Time Formats</a>). If the specific day or month are not known, then 01 should be specified.</td></tr>
-    <tr><td class="prop">Usage note:</td><td>This property should be set using the first known date of issuance. <b>Example:</b> 2010-05-07</td></tr>
+    <tr><td class="prop">Usage note:</td><td>The value of this property indicates a change to the actual dataset, not a change to the catalog record. An absent value may indicate that the dataset has never changed after its initial publication, or that the date of last modification is not known, or that the dataset is continuously updated.</td></tr>
+    <tr><td class="prop">See also:</td><td><a href="#Property:dataset_frequency">frequency</a></td></tr>
   </tbody>
 </table>
 </section>
 
 <section>
-<h3 id="Property:_frequency">Property: frequency</h3>
-<p>The frequency with which dataset is published.</p>
-<p class="issue">See <a href="https://www.w3.org/2011/gld/track/issues/5">Issue-5</a></p>
+<h3 id="Property:dataset_language">Property: language</h3>
+<p>The language of the dataset.</p>
+
 <table class="definition">
-  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/accrualPeriodicity">dcterms:accrualPeriodicity</a></th></tr></thead>
+  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/language">dct:language</a></th></tr></thead>
   <tbody>
-    <tr><td class="prop">Range:</td><td><a href="http://purl.org/dc/terms/Frequency">dcterms:Frequency</a> (A rate at which something recurs)</td></tr>
-    <tr><td class="prop">Domain:</td><td><a href="http://purl.org/dc/terms/Collection">dcterms:Collection</a> so, a Catalog must be a dcterms:Collection as well.</td></tr>
+    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2000/01/rdf-schema#Resource">rdfs:Resource</a>
+    <br/>
+    Resources defined by the Library of Congress (<a href="http://id.loc.gov/vocabulary/iso639-1.html">1</a>,
+     <a href="http://id.loc.gov/vocabulary/iso639-2.html">2</a>) SHOULD be used.
+  <br/>
+If a ISO 639-1 (two-letter) code is defined for language, then its corresponding IRI SHOULD be used; if no ISO 639-1 code is defined, then IRI corresponding to the ISO 639-2 (three-letter) code SHOULD be used.</td></tr>
+    <tr><td class="prop">Usage note:</td><td>This overrides the value of the <a href="#Property:_language">catalog language</a> in case of conflict.</td></tr>
   </tbody>
 </table>
 </section>
 
 <section>
-<h3 id="Property:_identifier">Property: identifier</h3>
+<h3 id="Property:dataset_publisher">Property: publisher</h3>
+<p>An entity responsible for making the dataset available.</p>
+<table class="definition">
+  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/publisher">dcterms:publisher</a></th></tr></thead>
+  <tbody>
+    <tr><td class="prop">Usage note:</td><td>Resources of type <a href="http://xmlns.com/foaf/0.1/Agent">foaf:Agent</a> 
+    are recommended as values for this property.</td></tr>
+    <tr><td class="prop">See also:</td><td><a href="Class:_Organization.2FPerson">Class: Organization/Person</a></td></tr>
+  </tbody>
+</table>
+</section>
+
+<section>
+<h3 id="Property:dataset_frequency">Property: frequency</h3>
+<p>The frequency at which dataset is published.</p>
+<table class="definition">
+  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/accrualPeriodicity">dcterms:accrualPeriodicity</a></th></tr></thead>
+  <tbody>
+    <tr><td class="prop">Range:</td><td><a href="http://purl.org/dc/terms/Frequency">dcterms:Frequency</a> (A rate at which something recurs)</td></tr>
+  </tbody>
+</table>
+</section>
+
+<section>
+<h3 id="Property:dataset_identifier">Property: identifier</h3>
 <p>A unique identifier of the dataset.</p>
 
 <table class="definition">
   <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/identifier">dcterms:identifier</a></th></tr></thead>
   <tbody>
     <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2000/01/rdf-schema#Literal">rdfs:Literal</a></td></tr>
-    <tr><td class="prop">Usage note:</td><td>The identifier might be used to coin permanent and unique URI for the dataset, but still having it represented explicitly is useful.</td></tr>
+    <tr><td class="prop">Usage note:</td><td>The identifier might be used as part of the URI of the dataset, but still having it represented explicitly is useful.</td></tr>
   </tbody>
 </table>
 </section>
 
 <section>
-<h3 id="Property:_spatial.2Fgeographical_coverage">Property: spatial/geographical coverage</h3>
+<h3 id="Property:dataset_spatial">Property: spatial/geographical coverage</h3>
 <p>Spatial coverage of the dataset.</p>
 
 <table class="definition">
@@ -559,7 +621,7 @@
 </section>
 
 <section>
-<h3 id="Property:_temporal_coverage">Property: temporal coverage</h3>
+<h3 id="Property:dataset_temporal">Property: temporal coverage</h3>
 <p>The temporal period that the dataset covers.</p>
 
 <table class="definition">
@@ -571,38 +633,22 @@
 </section>
 
 <section>
-<h3 id="Property:_language_2">Property: language</h3>
-<p>The language of the dataset.</p>
+<h3 id="Property:dataset_theme">Property: theme/category</h3>
+<p>The main category of the dataset. A dataset can have multiple themes.</p>
 
 <table class="definition">
-  <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/language">dct:language</a></th></tr></thead>
+  <thead><tr><th>RDF Property:</th><th><a href="http://www.w3.org/ns/dcat#theme">dcat:theme</a></th></tr></thead>
   <tbody>
-    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2000/01/rdf-schema#Resource">rdfs:Resource</a>
-    <br/>
-    Resources defined by the Library of Congress (<a href="http://id.loc.gov/vocabulary/iso639-1.html">1</a>,
-     <a href="http://id.loc.gov/vocabulary/iso639-2.html">2</a>) SHOULD be used 
-  <br/>
-If a ISO 639-1 (two-letter) code is defined for language, then its corresponding IRI SHOULD be used; if no ISO 639-1 code is defined, then IRI corresponding to the ISO 639-2 (three-letter) code SHOULD be used.</td></tr>
-    <tr><td class="prop">Usage note:</td><td>This overrides the value of the <a href="#Property:_language">catalog language</a> in case of conflict.</td></tr>
+    <tr><td class="prop">Sub property of:</td><td><a href="http://purl.org/dc/terms/subject">dct:subject</a></td></tr>
+    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2004/02/skos/core#Concept">skos:Concept</a></td></tr>
+    <tr><td class="prop">Usage note:</td><td>The set of <a href="http://www.w3.org/2004/02/skos/core#Concept">skos:Concept</a>s used to categorize the datasets are organized in a <a href="http://www.w3.org/2004/02/skos/core#ConceptScheme">skos:ConceptScheme</a> describing all the categories and their relations in the catalog.</td></tr>
+    <tr><td>See also:</td><td><a href="#Property:catalog_themes">catalog themes taxonomy</a></td></tr>
   </tbody>
 </table>
 </section>
 
 <section>
-<h3 id="Property:_theme.2Fcategory">Property: theme/category</h3>
-<p>The main category of the dataset. A dataset can have multiple themes.</p>
-
-<table class="definition">
-  <thead><tr><th>RDF Property:</th><th><a href="http://www.w3.org/ns/dcat#theme">dcat:theme</a></th></tr></thead>
-  <tbody>
-    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2004/02/skos/core#Concept">skos:Concept</a></td></tr>
-    <tr><td class="prop">Usage note:</td><td>The set of <a href="http://www.w3.org/2004/02/skos/core#Concept">skos:Concept</a>s used to categorize the datasets are organized in a <a href="http://www.w3.org/2004/02/skos/core#ConceptScheme">skos:ConceptScheme</a> describing all the categories and their relations in the catalog.</td></tr>
-  </tbody>
-</table>
-</section>
-
-<section>
-<h3 id="Property:_keyword.2Ftag"></a>Property: keyword/tag</h3>
+<h3 id="Property:dataset_keyword"></a>Property: keyword/tag</h3>
 <p>A keyword or tag describing the dataset.</p>
 
 <table class="definition">
@@ -614,12 +660,30 @@
 </section>
 
 <section>
-<h3 id="Property:_dataset_distribution">Property: dataset distribution</h3>
+<h3 id="Property:dataset_distribution">Property: dataset distribution</h3>
 <p>Connects a dataset to its available distributions.</p>
 <table class="definition">
   <thead><tr><th>RDF Property:</th><th><a href="http://www.w3.org/ns/dcat#distribution">dcat:distribution</a></th></tr></thead>
   <tbody>
-    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/ns/dcat#">dcat:Distribution</a></td></tr>
+    <tr><td class="prop">Domain:</td><td><a href="http://www.w3.org/ns/dcat#Dataset">dcat:Dataset</a></td></tr>
+    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/ns/dcat#Distribution">dcat:Distribution</a></td></tr>
+  </tbody>
+</table>
+</section>
+
+<section>
+<h3 id="Property:dataset_landingpage">Property: landing page</h3>
+<p>A Web page that can be navigated to in a Web browser to gain access to the dataset, its distributions and/or additional information.</p>
+<table class="definition">
+  <thead><tr><th>RDF Property:</th><th><a href="http://www.w3.org/ns/dcat#landingPage">dcat:landingPage</a></th></tr></thead>
+  <tbody>
+    <tr><td class="prop">Sub property of:</td><td><a href="http://xmlns.com/foaf/0.1/page">foaf:page</a></td></tr>
+    <tr><td class="prop">Domain:</td><td><a href="http://www.w3.org/ns/dcat#Dataset">dcat:Dataset</a></td></tr>
+    <tr><td class="prop">Range:</td><td><a href="http://xmlns.com/foaf/0.1/Document">foaf:Document</a></td></tr>
+    <tr><td class="prop">Usage note:</td><td>
+        If the distribution(s) are accessible only through a landing page 
+    (i.e. direct download URLs are not known), then the landing page link SHOULD be duplicated as accessURL on a distribution. (see <a href="#example-landing-page">example 3.4</a>)
+    </td></tr>
   </tbody>
 </table>
 </section>
@@ -627,19 +691,22 @@
 
 <section>
 <h2 id="Class:_Distribution">Class: Distribution</h2>
-<p>Represents a specific available form of a dataset. Each dataset might be available in different forms, these forms might represent different formats of the dataset, different endpoints,... Examples of Distribution include a downloadable CSV file, an XLS file representing the dataset, an RSS feed&hellip;</p>
+<p>Represents a specific available form of a dataset. Each dataset might be available in different forms, 
+these forms might represent different formats of the dataset or different endpoints. 
+Examples of distributions include a downloadable CSV file, an API or an RSS feed</p>
 
 
 <table class="definition">
   <thead><tr><th>RDF class:</th><th><a href="http://www.w3.org/ns/dcat#Distribution">dcat:Distribution</a></th></tr></thead>
   <tbody>
-    <tr><td class="prop">Usage note:</td><td>This represents a general availability of a dataset it implies no information about the actual access method of the data, i.e. whether it is a direct download, API, or a splash page.  Use one of its subclasses when the particular access method is known.</td></tr>
-    <tr><td class="prop">See also</td><td><a href="#Class:_Download">Download</a>, <a href="#Class:_WebService">WebService</a>, <a href="#Class:_Feed">Feed</a></td></tr>
+    <tr><td class="prop">Usage note:</td><td>This represents a general availability of a dataset it implies no information 
+    about the actual access method of the data, i.e. whether it is a direct download, API, or some through Web page. 
+    The use of <a href="#Property:distribution_download_url">dcat:downloadURL</a> property indicates directly downloadable distributions.</td></tr>
   </tbody>
 </table>
 
 <section>
-<h3 id="Property:_title_3">Property: title</h3>
+<h3 id="Property:distribution_title">Property: title</h3>
 <p>A name given to the distribution.</p>
 
 <table class="definition">
@@ -651,7 +718,7 @@
 </section>
 
 <section>
-<h3 id="Property:_description_3">Property: description</h3>
+<h3 id="Property:distribution_description">Property: description</h3>
 <p>free-text account of the distribution.</p>
 <table class="definition">
   <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/description">dcterms:description</a></th></tr></thead>
@@ -662,7 +729,7 @@
 </section>
 
 <section>
-<h3 id="Property:_release_date_2">Property: release date</h3>
+<h3 id="Property:distribution_release_date">Property: release date</h3>
 <p>Date of formal issuance (e.g., publication) of the distribution.</p>
 <table class="definition">
   <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/issued">dcterms:issued</a></th></tr></thead>
@@ -674,7 +741,7 @@
 </section>
 
 <section>
-<h3 id="Property:_update.3Fmodification_date">Property: update/modification date</h3>
+<h3 id="Property:distribution_update_date">Property: update/modification date</h3>
 <p>Most recent date on which the distribution was changed, updated or modified.</p>
 <table class="definition">
   <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/modified">dcterms:modified</a></th></tr></thead>
@@ -686,21 +753,7 @@
 </section>
 
 <section>
-<h3 id="Property:_access.2Fdownload">Property: access/download</h3>
-<p>points to the location of a distribution. This can be a direct download link, a link to an HTML page containing a link to the actual data, Feed, Web Service etc. the semantic is determined by its domain (Distribution, Feed, WebService, Download).</p>
-<p class="issue">If the value is always a URI, shouldn't the range be rdfs:Resource?</p>
-<table class="definition">
-  <thead><tr><th>RDF Property:</th><th><a href="http://www.w3.org/ns/dcat#accessURL">dcat:accessURL</a></th></tr></thead>
-  <tbody>
-    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2000/01/rdf-schema#Literal">rdfs:Literal</a></td></tr>
-    <tr><td class="prop">Usage note:</td><td>the value is a URL.</td></tr>
-    <tr><td class="prop">See also</td><td><a href="#Class:_Download">Download</a>, <a href="#Class:_WebService">WebService</a>, <a href="#Class:_Feed">Feed</a></td></tr>
-  </tbody>
-</table>
-</section>
-
-<section>
-<h3 id="Property:_license_2">Property: license</h3>
+<h3 id="Property:distribution_license">Property: license</h3>
 <p>The license under which the distribution is made available.</p>
 
 <table class="definition">
@@ -713,6 +766,39 @@
 
 
 <section>
+<h3 id="Property:distribution_accessurl">Property: access URL</h3>
+<p>Could be any kind of URL that gives access to a distribution of the dataset. E.g. landing page, download, feed URL, 
+SPARQL endpoint. Use when your catalog does not have information on which it is or when it is definitely not a download.</p>
+<table class="definition">
+  <thead><tr><th>RDF Property:</th><th><a href="http://www.w3.org/ns/dcat#accessURL">dcat:accessURL</a></th></tr></thead>
+  <tbody>
+    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2000/01/rdf-schema#Resource">rdfs:Resource</a></td></tr>
+    <tr><td class="prop">Usage note:</td><td><ul> <li>the value is a URL.</li>
+    <li>
+    If the distribution(s) are accessible only through a landing page 
+    (i.e. direct download URLs are not known), then the landing page link SHOULD be duplicated as accessURL on a distribution. (see <a href="#example-landing-page">example 3.4</a>)
+    </li></ul>
+    </td></tr>
+    <tr><td class="prop">See also</td><td><a href="#Property:distribution_downloadurl">distribution download URL</a></td></tr>
+  </tbody>
+</table>
+</section>
+
+<section>
+<h3 id="Property:distribution_downloadurl">Property: download URL</h3>
+<p>This is a direct link to a downloadable file in a given format. E.g. CSV file or RDF file. 
+The format is described by the distribution's dc:format and/or dcat:mediaType</p>
+<table class="definition">
+  <thead><tr><th>RDF Property:</th><th><a href="http://www.w3.org/ns/dcat#downloadURL">dcat:downloadURL</a></th></tr></thead>
+  <tbody>
+    <tr><td class="prop">Range:</td><td><a href="http://www.w3.org/2000/01/rdf-schema#Resource">rdfs:Resource</a></td></tr>
+    <tr><td class="prop">Usage note:</td><td>the value is a URL.</td></tr>
+    <tr><td class="prop">See also</td><td><a href="#Property:distribution_accessurl">distribution access URL</a></td></tr>
+  </tbody>
+</table>
+</section>
+
+<section>
 <h3 id="Property:_size">Property: byteSize</h3>
 <p>The size of a distribution in bytes.</p>
 
@@ -747,7 +833,7 @@
   <thead><tr><th>RDF Property:</th><th><a href="http://purl.org/dc/terms/format">dcterms:format</a></th></tr></thead>
   <tbody>
     <tr><td class="prop">Range:</td><td><a href="http://purl.org/dc/terms/MediaTypeOrExtent">dcterms:MediaTypeOrExtent</a></td></tr>
-    <tr><td class="prop">Usage note:</td><td>dcat:mediaType SHOULD be used if the type of the distribution is defined at <a href="http://www.iana.org/assignments/media-types/">IANA</a>.</td></tr>
+    <tr><td class="prop">Usage note:</td><td>dcat:mediaType SHOULD be used if the type of the distribution is defined by <a href="http://www.iana.org/assignments/media-types/">IANA</a>.</td></tr>
   </tbody>
 </table>
 </section>
@@ -761,7 +847,7 @@
   <thead><tr><th>RDF Classes:</th><th><a href="http://www.w3.org/2004/02/skos/core#ConceptScheme">skos:ConceptScheme</a>, <a href="http://www.w3.org/2004/02/skos/core#Concept">skos:Concept</a></th></tr></thead>
   <tbody>
     <tr><td class="prop">Usage note:</td><td>It's necessary to use either skos:inScheme or skos:topConceptOf on every skos:Concept otherwise it's not clear which concept scheme they belong to.</td></tr>
-    <tr><td class="prop">See also:</td><td><a href="#Property:_themes">catalog themes</a>, <a href="#Property:_theme.2Fcategory">dataset theme</a></td></tr>
+    <tr><td class="prop">See also:</td><td><a href="#Property:catalog_themes">catalog themes</a>, <a href="#Property:dataset_theme">dataset theme</a></td></tr>
   </tbody>
 </table>
 </section>