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		<id>https://ac.bslw.com/community/wiki/index.php?action=history&amp;feed=atom&amp;title=Terminology-O</id>
		<title>Terminology-O - Revision history</title>
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		<updated>2026-04-04T05:05:16Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://ac.bslw.com/community/wiki/index.php?title=Terminology-O&amp;diff=2688&amp;oldid=prev</id>
		<title>Casey: Changed &quot;usual&quot; to &quot;usually&quot; under OCLC Institution Code</title>
		<link rel="alternate" type="text/html" href="https://ac.bslw.com/community/wiki/index.php?title=Terminology-O&amp;diff=2688&amp;oldid=prev"/>
				<updated>2016-07-08T19:19:12Z</updated>
		
		<summary type="html">&lt;p&gt;Changed &amp;quot;usual&amp;quot; to &amp;quot;usually&amp;quot; under OCLC Institution Code&lt;/p&gt;
&lt;table class='diff diff-contentalign-left'&gt;
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				&lt;td colspan='2' style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan='2' style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 19:19, 8 July 2016&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 5:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 5:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;===OCLC Institution Code===&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;===OCLC Institution Code===&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Participating libraries using the OCLC Union Catalog are issued an coded Symbol unique to their library.&amp;#160; The symbol is &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;usual &lt;/del&gt;a three to five digit code represented by letters and other characters. (ac)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Participating libraries using the OCLC Union Catalog are issued an coded Symbol unique to their library.&amp;#160; The symbol is &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;usually &lt;/ins&gt;a three to five digit code represented by letters and other characters. (ac)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;===Ontology===&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;===Ontology===&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Casey</name></author>	</entry>

	<entry>
		<id>https://ac.bslw.com/community/wiki/index.php?title=Terminology-O&amp;diff=358&amp;oldid=prev</id>
		<title>WikiSysop: New page: ==Terminology… O==  ===Obsolete forms=== Also known as obsolete subdivisions, an obsolete form or subdivision is a subdivision no longer used by current MARC21 standards. ''' '''An examp...</title>
		<link rel="alternate" type="text/html" href="https://ac.bslw.com/community/wiki/index.php?title=Terminology-O&amp;diff=358&amp;oldid=prev"/>
				<updated>2008-10-13T19:23:19Z</updated>
		
		<summary type="html">&lt;p&gt;New page: ==Terminology… O==  ===Obsolete forms=== Also known as obsolete subdivisions, an obsolete form or subdivision is a subdivision no longer used by current MARC21 standards. &amp;#039;&amp;#039;&amp;#039; &amp;#039;&amp;#039;&amp;#039;An examp...&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;==Terminology… O==&lt;br /&gt;
&lt;br /&gt;
===Obsolete forms===&lt;br /&gt;
Also known as obsolete subdivisions, an obsolete form or subdivision is a subdivision no longer used by current MARC21 standards. ''' '''An example of''' '''an obsolete form would be the topical heading Nurses and nursing.  This heading is no longer used and is replace by two distinct topical headings, 650 0$a Nurses and 650 0$aNursing.  (mpg)&lt;br /&gt;
&lt;br /&gt;
===OCLC Institution Code===&lt;br /&gt;
Participating libraries using the OCLC Union Catalog are issued an coded Symbol unique to their library.  The symbol is usual a three to five digit code represented by letters and other characters. (ac)&lt;br /&gt;
&lt;br /&gt;
===Ontology===&lt;br /&gt;
In both [http://en.wikipedia.org/wiki/Computer_science computer science] and [http://en.wikipedia.org/wiki/Information_science information science], an '''ontology''' is a formal representation of a set of concepts within a [http://en.wikipedia.org/wiki/Domain_of_discourse domain] and the relationships between those concepts. It is used to [http://en.wikipedia.org/wiki/Reasoning reason] about the properties of that domain, and may be used to define the domain.  Ontologies are used in [http://en.wikipedia.org/wiki/Artificial_intelligence artificial intelligence], the [http://en.wikipedia.org/wiki/Semantic_Web Semantic Web], [http://en.wikipedia.org/wiki/Software_engineering software engineering], [http://en.wikipedia.org/wiki/Biomedical_informatics biomedical informatics], [http://en.wikipedia.org/wiki/Library_science library science], and [http://en.wikipedia.org/wiki/Information_architecture information architecture] as a form of [http://en.wikipedia.org/wiki/Knowledge_representation knowledge representation] about the world or some part of it. Common components of ontologies include:  Most ontologies describe individuals (instances), classes (concepts), attributes, and relations. (wp)&lt;br /&gt;
&lt;br /&gt;
===OPAC===&lt;br /&gt;
An '''Online Public Access Catalog''' or '''OPAC''' (aka '''iPAC''' for [http://en.wikipedia.org/wiki/Internet Internet]/[http://en.wikipedia.org/wiki/Intranet Intranet] Public Access Catalogue) is a computerized online [http://en.wikipedia.org/wiki/Library_catalog catalog] of the materials held in a [http://en.wikipedia.org/wiki/Library library], or library system. The library staff and the public can usually access it at computers within the library, or from home. OPAC terminals began to replace [http://en.wikipedia.org/wiki/Card_catalog card catalogs] in many libraries in the 1980s. Since the mid-1990s, these systems have increasingly migrated to [http://en.wikipedia.org/wiki/World_Wide_Web Web]-based interfaces. OPACs are often part of an [http://en.wikipedia.org/wiki/Integrated_library_system integrated library system]. (wp) &lt;br /&gt;
&lt;br /&gt;
[[category:General Information]]&lt;/div&gt;</summary>
		<author><name>WikiSysop</name></author>	</entry>

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