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    <title>Jpa2 on Micha Kops&#39; Tech Notes</title>
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    <description>Recent content in Jpa2 on Micha Kops&#39; Tech Notes</description>
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      <title>Object-relational Mapping using Java Persistence API JPA 2</title>
      <link>https://www.hascode.com/object-relational-mapping-using-java-persistence-api-jpa-2/</link>
      <pubDate>Mon, 11 Oct 2010 00:00:00 +0200</pubDate>
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&lt;p&gt;Today we’re going to take a look at the world of object-relational Mapping and how it is done using the Java Persistence API by creating some basic examples, mapping some relations and querying objects using JPQL or the Criteria API..&lt;/p&gt;
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&lt;h2 id=&#34;_prerequisites&#34;&gt;Prerequisites&lt;/h2&gt;
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&lt;div class=&#34;ulist&#34;&gt;
&lt;ul&gt;
&lt;li&gt;
&lt;p&gt;Java 6 JDK&lt;/p&gt;
&lt;/li&gt;
&lt;li&gt;
&lt;p&gt;Maven &amp;gt;= 2&lt;/p&gt;
&lt;/li&gt;
&lt;li&gt;
&lt;p&gt;If you’d like to take a look behind the scenes e.g. how entities are mapped in your database you could install a RDBMS of your choice .. or just use Derby/JavaDB that is bundled with the JDK 6&lt;/p&gt;
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