View DDC number information

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The quality and accuracy of machine translation can vary significantly from one text to another. Read the page in original English <a onclick="goToLanguage('en')">here</a>.</div> <script type="text/javascript">/*<![CDATA[*/ // Determine if machine translation message should be shown function displayMachineTranslationMessage() { // Show if Italian, excluding certain pages if (thisSiteLanguage == 'it' && !document.querySelector('.columbia-page-home')) { document.querySelector('#machine-translation-message').style.display = null; } } displayMachineTranslationMessage();/*]]>*/</script> </div> <div class="mt-content-side"></div> <div id="mt-toc-container" data-title="Table of contents" data-collapsed="true"> <button class="mt-toggle mt-summary-toggle ui-button-icon mt-toggle-expand">Table of contents</button> <div class="mt-toc-content mt-collapsible-section mt-toc-hide"> <ol><li><a href="#Elements" rel="internal">Elements </a></li><li><a href="#Element_details" rel="internal">Element details</a></li><li><a href="#DDC_number_types" rel="internal">DDC number types </a></li></ol> </div> </div> <div id="page-top"> <div id="topic"> <div id="pageText"> <div class="mt-page-summary"><div class="mt-page-overview">Discover how to view more information about DDC classifications, subject headings and tables in Dewey Linked Data.</div></div> <p><span class="mt-icon-info2"> </span>Note: Some information requires you to be signed in to view. See <a title="Sign in to Dewey Linked Data" href="https://help.oclc.org/Metadata_Services/WebDewey/WebDewey_Linked_Data/Sign_in_to_Dewey_Linked_Data" rel="internal">Sign in to Dewey Linked Data</a>.</p> <div mt-section-origin="Metadata_Services/WebDewey/WebDewey_Linked_Data/View_DDC_number_information" class="mt-section" id="section_1"><span id="Elements"></span><h2 class="editable">Elements </h2> <ul> <li>Each classification, subject heading or table number represents an entry in the DDC schedules or tables synthesized according to instructions in the schedules and/or tables.</li> <li>Each record contains a DDC number, a caption (heading) describing the class (subject) that the number represents, a representation of the class number’s position in the DDC hierarchy, and term(s) from the DDC Relative Index.</li> <li>Records include terminology associated with the number from Library of Congress subject headings.</li> </ul> </div><div mt-section-origin="Metadata_Services/WebDewey/WebDewey_Linked_Data/View_DDC_number_information" class="mt-section" id="section_2"><span id="Element_details"></span><h2 class="editable">Element details</h2> <table> <thead> <tr> <th scope="col">Element</th> <th scope="col">Description</th> </tr> </thead> <tbody> <tr> <td><strong>DDC Number</strong></td> <td>See the <a title="View DDC number information" class="mt-self-link" href="#DDC_number_types" rel="internal"><u>DDC number types</u></a> table for details.</td> </tr> <tr> <td><strong><strong>Caption</strong></strong></td> <td>For each DDC number in the schedules, tables, and manual, a caption (heading) defines the subject or subdivision that number represents.</td> </tr> <tr> <td><strong>Hierarchy</strong></td> <td> <p>Each Dewey Linked Data record contains a representation of the number’s position in the DDC hierarchy. Click on the hyperlinked text labels to go to a higher level in the hierarchy</p> </td> </tr> <tr> <td><strong>Download</strong></td> <td>Click <strong>Download </strong>to the DDC number's information as a .JSON file.</td> </tr> <tr> <td><strong>URI</strong></td> <td>Each DDC number has an associated URI that can be copied or downloaded as a .JSON file.</td> </tr> <tr> <td><strong>Entity type</strong></td> <td>Each DDC number has an associated entity type. For more information, see the <a title="WorldCat ontology guidelines and standards" href="https://help.oclc.org/Metadata_Services/WorldCat_ontology_guidelines_and_standards" rel="internal">WorldCat ontology guidelines and standards</a>.</td> </tr> <tr> <td><b>Notes</b></td> <td> <p>Certain notes may be present in the schedules and tables.</p> <ul> <li>Scope notes indicate that the meaning of a class number is broader or narrower than is apparent from the heading</li> <li>Revision notes appear in the history box and warn users that there have been changes in the subdivisions of a class since the previous edition and indicate the degree of revision</li> </ul> </td> </tr> <tr> <td colspan="2"><strong><strong><strong><strong>Terminology Sources</strong></strong></strong></strong> <ul> <li>Most records for schedule numbers contain terms from the DDC Relative Index and Library of Congress subject headings associated with the class numbers.</li> </ul> </td> </tr> <tr> <td><strong><strong>Relative Index Terms</strong></strong></td> <td> <p> <span class="mt-icon-info2"> </span>Note: You must be signed in to see this information.</p> <ul> <li>Terms from the DDC Relative Index name the topics covered by the number in the record.</li> <li>Many Relative Index terms have subheadings (preceded by two hyphens) that indicate the discipline in which the topics are treated in the class represented by the number.</li> </ul> </td> </tr> <tr> <td><strong>Other numbers</strong></td> <td> <p>All users can view the first level of narrower classes subordinate to the number in the <strong>Narrower</strong> box.</p> <p>Users who are signed in can also view related numbers in the <strong>Related</strong> box.</p> </td> </tr> </tbody> </table> </div><div mt-section-origin="Metadata_Services/WebDewey/WebDewey_Linked_Data/View_DDC_number_information" class="mt-section" id="section_3"><span id="DDC_number_types"></span><h2 class="editable">DDC number types </h2> <table> <thead> <tr> <th scope="col">Number type</th> <th scope="col">Example</th> <th scope="col">Description</th> </tr> </thead> <tbody> <tr> <td>Class number</td> <td>004.67</td> <td>Number or span of numbers provided in the DDC schedules to represent a subject.</td> </tr> <tr> <td>Built class number</td> <td>B 598.176</td> <td>A number constructed according to add instructions stated or implied in the schedules or tables to represent a specific subdivision of a DDC class.</td> </tr> <tr> <td>Centered entry</td> <td>C 930-990</td> <td>Represents a subject covered by a span of numbers.</td> </tr> <tr> <td>Optional number</td> <td>(921)</td> <td>Number enclosed in parentheses; a class number that is an optional alternative to the number usually assigned to a concept.</td> </tr> <tr> <td>Bracketed number</td> <td>[104] Unassigned 511[.22] Intuitionistic mathematics [291] Comparative religion T5--[04] Persons of mixed ancestry with ethnic origins from more than one continent</td> <td>Number enclosed in square brackets; a number that has been discontinued or relocated, or an unassigned number. Record instructs you not to use this number and provides a cross-reference to the correct class number.</td> </tr> <tr> <td>Table number</td> <td>T1--071</td> <td>Number for an entry in one of the DDC numbered auxiliary tables (Tables 1–6; in the Abridged Edition, Tables 1–4). Provides notation that can be added to other numbers to make a class number appropriately specific to the work being classified.</td> </tr> <tr> <td>Built table number</td> <td>T4--092</td> <td>A number constructed according to add instructions stated or implied in the schedules or tables to represent a specific subdivision of a DDC table.</td> </tr> <tr> <td>Table centered entry</td> <td>T2--4- T2--9</td> <td>Number used to indicate and relate structurally a span of table numbers that together form a single concept.</td> </tr> <tr> <td>Add table notation</td> <td>617:028</td> <td>Number for an entry in one of the DDC add tables (lists of special notation found in add notes under specific numbers throughout the schedules and occasionally in Tables 1–6). What precedes colon is class number or span where add table is located; what follows colon is notation to be added. Provides notation that can be added to other numbers, as instructed at the beginning of the add table, to make a class number appropriately specific to the work being classified.</td> </tr> <tr> <td>Manual number</td> <td>M 361-365</td> <td>A number or range of numbers covered in an entry in the DDC Manual. 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