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	<title>Tinsology &#187; data</title>
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	<description>Read Me</description>
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		<title>Metadata</title>
		<link>http://tinsology.net/2009/07/metadata/</link>
		<comments>http://tinsology.net/2009/07/metadata/#comments</comments>
		<pubDate>Thu, 02 Jul 2009 05:04:26 +0000</pubDate>
		<dc:creator>Tinsley</dc:creator>
				<category><![CDATA[Databases]]></category>
		<category><![CDATA[data]]></category>
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		<category><![CDATA[metadata]]></category>

		<guid isPermaLink="false">http://tinsology.net/?p=794</guid>
		<description><![CDATA[Throughout the life of a database there may come times when it needs to be updated to incorporate changes or new features. This may involve adding new attributes to existing entities; adding new columns to tables. The problem with this is that in a populated database, modifying the database schema can be very expensive with regard to performance. This is not something you want to do frequently on a live site. One method which not only makes your database more resilient to future change, but also improves modularity is the use of metadata. 
 
You don't have to look very <a href="http://tinsology.net/2009/07/metadata/">Read More</a>

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</ol>]]></description>
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