persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
  <persistence-unit name="IntroToJavaEE7PU" transaction-type="JTA">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <jta-data-source>jdbc/DerbyConnection</jta-data-source>
    <exclude-unlisted-classes>false</exclude-unlisted-classes>
    <!--properties>
            <property name="javax.persistence.schema-generation.database.action" value="create"/>
            <property name="javax.persistence.schema-generation.scripts.action" value="create"/>
            <property name="javax.persistence.schema-generation.scripts.create-target" value="/ddl-scripts/create-trarget-script.ddl"/>
            <property name="eclipselink.deploy-on-startup" value="true"/>
    </properties-->
  </persistence-unit>
</persistence>