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 <h2>Data cubes</h2>
 
-<section id="cubes-model" class="informative">
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 <h3>Data Sets</h3>
 
 <p>A DataSet is a collection of statistical data that corresponds to a

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 and <a 
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-</section><section id="toc"><h2 class="introductory">Table of Contents</h2><ul class="toc"><li class="tocline"><a href="#outline" class="tocxref"><span class="secno">1. </span>Outline of the vocabulary</a><ul class="toc"><li class="tocline"><a href="#index" class="tocxref"><span class="secno">1.1 </span>Vocabulary index</a></li></ul></li><li class="tocline"><a href="#introduction" class="tocxref"><span class="secno">2. </span>Introduction</a><ul class="toc"><li class="tocline"><a href="#intro-rdf" class="tocxref"><span class="secno">2.1 </span>RDF and Linked Data</a></li><li class="tocline"><a href="#intro-sdmx" class="tocxref"><span class="secno">2.2 </span>SDMX and related standards</a></li><li class="tocline"><a href="#intro-audience" class="tocxref"><span class="secno">2.3 </span>Audience and scope</a></li></ul></li><li class="tocline"><a href="#namespaces" class="tocxref"><span class="secno">3. </span>Namespaces and Document Conventions</a></li><li class="tocline"><a href="#conformance" class="tocxref"><span class="secno">4. </span>Conformance</a></li><li class="tocline"><a href="#data-cubes" class="tocxref"><span class="secno">5. </span>Data cubes</a><ul class="toc"><li class="tocline"><a href="#cubes-model" class="tocxref"><span class="secno">5.1 </span>Data Sets</a></li><li class="tocline"><a href="#cubes-model" class="tocxref"><span class="secno">5.2 </span>The cube model - dimensions, attributes, measures</a></li><li class="tocline"><a href="#cubes-slices" class="tocxref"><span class="secno">5.3 </span>Introducing Slices</a></li><li class="tocline"><a href="#example" class="tocxref"><span class="secno">5.4 </span>An example</a></li></ul></li><li class="tocline"><a href="#dsd" class="tocxref"><span class="secno">6. </span>Creating data structure definitions</a><ul class="toc"><li class="tocline"><a href="#dsd-dimensions" class="tocxref"><span class="secno">6.1 </span>Dimensions, attributes and measures</a></li><li class="tocline"><a href="#dsd-cog" class="tocxref"><span class="secno">6.2 </span>Content oriented guidelines</a></li><li class="tocline"><a href="#dsd-example" class="tocxref"><span class="secno">6.3 </span>Example dimensions and measure</a></li><li class="tocline"><a href="#dsd-dsd" class="tocxref"><span class="secno">6.4 </span>ComponentSpecifications and DataStructureDefinitions</a></li><li class="tocline"><a href="#dsd-mm" class="tocxref"><span class="secno">6.5 </span>Handling multiple measures</a><ul class="toc"><li class="tocline"><a href="#dsd-mm-obs" class="tocxref"><span class="secno">6.5.1 </span>Multi-measure observations</a></li><li class="tocline"><a href="#dsd-mm-dim" class="tocxref"><span class="secno">6.5.2 </span><span>Measure dimension</span></a></li></ul></li></ul></li><li class="tocline"><a href="#datasets" class="tocxref"><span class="secno">7. </span>Expressing data sets</a><ul class="toc"><li class="tocline"><a href="#dataset-basic" class="tocxref"><span class="secno">7.1 </span>Data sets and observations</a></li><li class="tocline"><a href="#slices" class="tocxref"><span class="secno">7.2 </span>Slices and groups of observations</a></li></ul></li><li class="tocline"><a href="#schemes" class="tocxref"><span class="secno">8. </span>Concept schemes and code lists</a><ul class="toc"><li class="tocline"><a href="#schemes-intro" class="tocxref"><span class="secno">8.1 </span>Coded values for components properties</a></li><li class="tocline"><a href="#schemes-hierarchy" class="tocxref"><span class="secno">8.2 </span>Hierarchical code lists</a></li><li class="tocline"><a href="#schemes-hierarchy-nonskos" class="tocxref"><span class="secno">8.3 </span>Non-SKOS hierarchies</a></li><li class="tocline"><a href="#schemes-aggregation" class="tocxref"><span class="secno">8.4 </span>Aggregation</a></li></ul></li><li class="tocline"><a href="#metadata" class="tocxref"><span class="secno">9. </span>DataSet metadata</a><ul class="toc"><li class="tocline"><a href="#metadata-categorization" class="tocxref"><span class="secno">9.1 </span>Categorizing a data set</a></li><li class="tocline"><a href="#metadata-publishers" class="tocxref"><span class="secno">9.2 </span>Describing publishers</a></li></ul></li><li class="tocline"><a href="#normalize" class="tocxref"><span class="secno">10. </span>Abbreviated and normalized data cubes</a><ul class="toc"><li class="tocline"><a href="#normalize-algorithm" class="tocxref"><span class="secno">10.1 </span>Normalization algorithm</a></li></ul></li><li class="tocline"><a href="#wf" class="tocxref"><span class="secno">11. </span>Well-formed cubes</a><ul class="toc"><li class="tocline"><a href="#wf-rules" class="tocxref"><span class="secno">11.1 </span>Integrity constraints</a></li></ul></li><li class="tocline"><a href="#vocab-reference" class="tocxref"><span class="secno">12. </span>Vocabulary reference</a><ul class="toc"><li class="tocline"><a href="#reference-datasets" class="tocxref"><span class="secno">12.1 </span>DataSets</a></li><li class="tocline"><a href="#reference-observations" class="tocxref"><span class="secno">12.2 </span>Observations</a></li><li class="tocline"><a href="#reference-slices" class="tocxref"><span class="secno">12.3 </span>Slices</a></li><li class="tocline"><a href="#reference-components" class="tocxref"><span class="secno">12.4 </span>Dimensions, Attributes, Measures</a></li><li class="tocline"><a href="#reference-component-properties" class="tocxref"><span class="secno">12.5 </span>Reusable general purpose component properties</a></li><li class="tocline"><a href="#reference-dsd" class="tocxref"><span class="secno">12.6 </span>Data Structure Definitions</a></li><li class="tocline"><a href="#reference-compspec" class="tocxref"><span class="secno">12.7 </span>Component specifications - for qualifying component use in a DSD</a></li><li class="tocline"><a href="#reference-slice-definitions" class="tocxref"><span class="secno">12.8 </span>Slice definitions</a></li><li class="tocline"><a href="#reference-concepts" class="tocxref"><span class="secno">12.9 </span>Concepts</a></li><li class="tocline"><a href="#reference-nonskos-hierarchy" class="tocxref"><span class="secno">12.10 </span>Non-SKOS Hierarchies</a></li></ul></li><li class="tocline"><a href="#acknowledgements" class="tocxref"><span class="secno">A. </span>Acknowledgements</a></li><li class="tocline"><a href="#change-history" class="tocxref"><span class="secno">B. </span>Change history </a></li><li class="tocline"><a href="#full-example" class="tocxref"><span class="secno">C. </span>Complete example Data Cube</a></li><li class="tocline"><a href="#references" class="tocxref"><span class="secno">D. </span>References</a><ul class="toc"><li class="tocline"><a href="#normative-references" class="tocxref"><span class="secno">D.1 </span>Normative references</a></li><li class="tocline"><a href="#informative-references" class="tocxref"><span class="secno">D.2 </span>Informative references</a></li></ul></li></ul></section>
+</section><section id="toc"><h2 class="introductory">Table of Contents</h2><ul class="toc"><li class="tocline"><a href="#outline" class="tocxref"><span class="secno">1. </span>Outline of the vocabulary</a><ul class="toc"><li class="tocline"><a href="#index" class="tocxref"><span class="secno">1.1 </span>Vocabulary index</a></li></ul></li><li class="tocline"><a href="#introduction" class="tocxref"><span class="secno">2. </span>Introduction</a><ul class="toc"><li class="tocline"><a href="#intro-rdf" class="tocxref"><span class="secno">2.1 </span>RDF and Linked Data</a></li><li class="tocline"><a href="#intro-sdmx" class="tocxref"><span class="secno">2.2 </span>SDMX and related standards</a></li><li class="tocline"><a href="#intro-audience" class="tocxref"><span class="secno">2.3 </span>Audience and scope</a></li></ul></li><li class="tocline"><a href="#namespaces" class="tocxref"><span class="secno">3. </span>Namespaces and Document Conventions</a></li><li class="tocline"><a href="#conformance" class="tocxref"><span class="secno">4. </span>Conformance</a></li><li class="tocline"><a href="#data-cubes" class="tocxref"><span class="secno">5. </span>Data cubes</a><ul class="toc"><li class="tocline"><a href="#cubes-model-datasets" class="tocxref"><span class="secno">5.1 </span>Data Sets</a></li><li class="tocline"><a href="#cubes-model" class="tocxref"><span class="secno">5.2 </span>The cube model - dimensions, attributes, measures</a></li><li class="tocline"><a href="#cubes-slices" class="tocxref"><span class="secno">5.3 </span>Introducing Slices</a></li><li class="tocline"><a href="#example" class="tocxref"><span class="secno">5.4 </span>An example</a></li></ul></li><li class="tocline"><a href="#dsd" class="tocxref"><span class="secno">6. </span>Creating data structure definitions</a><ul class="toc"><li class="tocline"><a href="#dsd-dimensions" class="tocxref"><span class="secno">6.1 </span>Dimensions, attributes and measures</a></li><li class="tocline"><a href="#dsd-cog" class="tocxref"><span class="secno">6.2 </span>Content oriented guidelines</a></li><li class="tocline"><a href="#dsd-example" class="tocxref"><span class="secno">6.3 </span>Example dimensions and measure</a></li><li class="tocline"><a href="#dsd-dsd" class="tocxref"><span class="secno">6.4 </span>ComponentSpecifications and DataStructureDefinitions</a></li><li class="tocline"><a href="#dsd-mm" class="tocxref"><span class="secno">6.5 </span>Handling multiple measures</a><ul class="toc"><li class="tocline"><a href="#dsd-mm-obs" class="tocxref"><span class="secno">6.5.1 </span>Multi-measure observations</a></li><li class="tocline"><a href="#dsd-mm-dim" class="tocxref"><span class="secno">6.5.2 </span><span>Measure dimension</span></a></li></ul></li></ul></li><li class="tocline"><a href="#datasets" class="tocxref"><span class="secno">7. </span>Expressing data sets</a><ul class="toc"><li class="tocline"><a href="#dataset-basic" class="tocxref"><span class="secno">7.1 </span>Data sets and observations</a></li><li class="tocline"><a href="#slices" class="tocxref"><span class="secno">7.2 </span>Slices and groups of observations</a></li></ul></li><li class="tocline"><a href="#schemes" class="tocxref"><span class="secno">8. </span>Concept schemes and code lists</a><ul class="toc"><li class="tocline"><a href="#schemes-intro" class="tocxref"><span class="secno">8.1 </span>Coded values for components properties</a></li><li class="tocline"><a href="#schemes-hierarchy" class="tocxref"><span class="secno">8.2 </span>Hierarchical code lists</a></li><li class="tocline"><a href="#schemes-hierarchy-nonskos" class="tocxref"><span class="secno">8.3 </span>Non-SKOS hierarchies</a></li><li class="tocline"><a href="#schemes-aggregation" class="tocxref"><span class="secno">8.4 </span>Aggregation</a></li></ul></li><li class="tocline"><a href="#metadata" class="tocxref"><span class="secno">9. </span>DataSet metadata</a><ul class="toc"><li class="tocline"><a href="#metadata-categorization" class="tocxref"><span class="secno">9.1 </span>Categorizing a data set</a></li><li class="tocline"><a href="#metadata-publishers" class="tocxref"><span class="secno">9.2 </span>Describing publishers</a></li></ul></li><li class="tocline"><a href="#normalize" class="tocxref"><span class="secno">10. </span>Abbreviated and normalized data cubes</a><ul class="toc"><li class="tocline"><a href="#normalize-algorithm" class="tocxref"><span class="secno">10.1 </span>Normalization algorithm</a></li></ul></li><li class="tocline"><a href="#wf" class="tocxref"><span class="secno">11. </span>Well-formed cubes</a><ul class="toc"><li class="tocline"><a href="#wf-rules" class="tocxref"><span class="secno">11.1 </span>Integrity constraints</a></li></ul></li><li class="tocline"><a href="#vocab-reference" class="tocxref"><span class="secno">12. </span>Vocabulary reference</a><ul class="toc"><li class="tocline"><a href="#reference-datasets" class="tocxref"><span class="secno">12.1 </span>DataSets</a></li><li class="tocline"><a href="#reference-observations" class="tocxref"><span class="secno">12.2 </span>Observations</a></li><li class="tocline"><a href="#reference-slices" class="tocxref"><span class="secno">12.3 </span>Slices</a></li><li class="tocline"><a href="#reference-components" class="tocxref"><span class="secno">12.4 </span>Dimensions, Attributes, Measures</a></li><li class="tocline"><a href="#reference-component-properties" class="tocxref"><span class="secno">12.5 </span>Reusable general purpose component properties</a></li><li class="tocline"><a href="#reference-dsd" class="tocxref"><span class="secno">12.6 </span>Data Structure Definitions</a></li><li class="tocline"><a href="#reference-compspec" class="tocxref"><span class="secno">12.7 </span>Component specifications - for qualifying component use in a DSD</a></li><li class="tocline"><a href="#reference-slice-definitions" class="tocxref"><span class="secno">12.8 </span>Slice definitions</a></li><li class="tocline"><a href="#reference-concepts" class="tocxref"><span class="secno">12.9 </span>Concepts</a></li><li class="tocline"><a href="#reference-nonskos-hierarchy" class="tocxref"><span class="secno">12.10 </span>Non-SKOS Hierarchies</a></li></ul></li><li class="tocline"><a href="#acknowledgements" class="tocxref"><span class="secno">A. </span>Acknowledgements</a></li><li class="tocline"><a href="#change-history" class="tocxref"><span class="secno">B. </span>Change history </a></li><li class="tocline"><a href="#full-example" class="tocxref"><span class="secno">C. </span>Complete example Data Cube</a></li><li class="tocline"><a href="#references" class="tocxref"><span class="secno">D. </span>References</a><ul class="toc"><li class="tocline"><a href="#normative-references" class="tocxref"><span class="secno">D.1 </span>Normative references</a></li><li class="tocline"><a href="#informative-references" class="tocxref"><span class="secno">D.2 </span>Informative references</a></li></ul></li></ul></section>
 
 
 
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 <section id="data-cubes" class="informative">
 <!--OddPage--><h2><span class="secno">5. </span>Data cubes</h2><p><em>This section is non-normative.</em></p>
 
-<section id="cubes-model" class="informative">
+<section id="cubes-model-datasets" class="informative">
 <h3><span class="secno">5.1 </span>Data Sets</h3><p><em>This section is non-normative.</em></p>
 
 <p>A DataSet is a collection of statistical data that corresponds to a