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    <title><![CDATA[Discussion on Build Your Skills: Define relationships between database tables ]]></title>
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    <lastBuildDate>2013-06-18T23:12:03-07:00</lastBuildDate>
             

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        <title><![CDATA[RE: Build Your Skills: Define relationships between database tables]]></title>
        <link><![CDATA[http://www.techrepublic.com/forum/discussions/14-146390-3358285]]></link>
        <description><![CDATA[One-to-one: Both tables can have only one record on either side of the relationship. Each primary key value relates to only one (or no) record in the related table. They're like spouses?you may or may not be married, but if you are, both you and your spouse have only one spouse. Most one-to-one relationships are forced by business rules and don't flow naturally from the data. In the absence of such a rule, you can usually combine both tables into one table without breaking any normalization rules.One-to-many: The primary key table contains only one record that relates to none, one, or many records in the related table. This relationship is similar to the one between you and a parent. You have only one mother, but your mother may have several children.Many-to-many: Each record in both tables can relate to any number of records (or no records) in the other table. For instance, if you have several siblings, so do your siblings (have many siblings). Many-to-many relationships require a third table, known as an associate or linking table, because relational systems can't directly accommodate the relationship.]]></description>
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        <dc:creator><![CDATA[Mphathi]]></dc:creator>
        <pubDate>Wed, 15 Sep 2010 06:41:44 -0700</pubDate>
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    <item>
        <title><![CDATA[Hello Everyone. Mr Fox is the coolest]]></title>
        <link><![CDATA[http://www.techrepublic.com/forum/discussions/14-146390-3201206]]></link>
        <description><![CDATA[Dont you agree]]></description>
        <guid><![CDATA[http://www.techrepublic.com/forum/discussions/14-146390-3201206]]></guid>
        <dc:creator><![CDATA[cderfv]]></dc:creator>
        <pubDate>Mon, 16 Nov 2009 17:16:12 -0800</pubDate>
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    <item>
        <title><![CDATA[Maybe for you....]]></title>
        <link><![CDATA[http://www.techrepublic.com/forum/discussions/14-146390-1579096]]></link>
        <description><![CDATA[This may have been useless for you, and may be not enough for the novice, but what about all those that just needed a quick one page refresher?Lets not forget that for each user of these pages, there is an entirely different environment and set of needs.  Lets not let ourselves suffer from tunnel vision and assume our little corner of the world is the entire world....I am reminded of the story of the blind men and the elephant...George]]></description>
        <guid><![CDATA[http://www.techrepublic.com/forum/discussions/14-146390-1579096]]></guid>
        <dc:creator><![CDATA[SQL_Joe]]></dc:creator>
        <pubDate>Tue, 17 Feb 2004 11:10:32 -0800</pubDate>
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    <item>
        <title><![CDATA[Helpful for novices]]></title>
        <link><![CDATA[http://www.techrepublic.com/forum/discussions/14-146390-1578006]]></link>
        <description><![CDATA[I agree that this is a helpful article for novices too. When tackling a complex idea like normalization it helps to look at it several different ways. I found this article useful!]]></description>
        <guid><![CDATA[http://www.techrepublic.com/forum/discussions/14-146390-1578006]]></guid>
        <dc:creator><![CDATA[BeverlyinCincy]]></dc:creator>
        <pubDate>Fri, 13 Feb 2004 14:06:30 -0800</pubDate>
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    <item>
        <title><![CDATA[Funamentals]]></title>
        <link><![CDATA[http://www.techrepublic.com/forum/discussions/14-146390-1574095]]></link>
        <description><![CDATA[A novice database designer should first learn about functional dependencies and Entity-Relation analysis. It is at least a chapter of a dozen pages. Every developer must understand the origin of his decision.]]></description>
        <guid><![CDATA[http://www.techrepublic.com/forum/discussions/14-146390-1574095]]></guid>
        <dc:creator><![CDATA[Pokvalitov]]></dc:creator>
        <pubDate>Tue, 03 Feb 2004 04:14:58 -0800</pubDate>
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    <item>
        <title><![CDATA[But for the novice database designer]]></title>
        <link><![CDATA[http://www.techrepublic.com/forum/discussions/14-146390-1573847]]></link>
        <description><![CDATA[Yes, it is very complex!  But, for the novice database designer, this article is a good way of opening their eyes on how they should begin developing a database.  And your right, by no means could anyone explain this theory in one page.]]></description>
        <guid><![CDATA[http://www.techrepublic.com/forum/discussions/14-146390-1573847]]></guid>
        <dc:creator><![CDATA[ctdatti@...]]></dc:creator>
        <pubDate>Mon, 02 Feb 2004 09:34:13 -0800</pubDate>
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    <item>
        <title><![CDATA[poor]]></title>
        <link><![CDATA[http://www.techrepublic.com/forum/discussions/14-146390-1573700]]></link>
        <description><![CDATA[Relational theory is complex question. Nobody can squeeze it into one page.]]></description>
        <guid><![CDATA[http://www.techrepublic.com/forum/discussions/14-146390-1573700]]></guid>
        <dc:creator><![CDATA[Pokvalitov]]></dc:creator>
        <pubDate>Sun, 01 Feb 2004 23:30:02 -0800</pubDate>
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