Persistence.xml not correctly configured

I'm not able to get this persistence file correct... I do not find any more information in the book that I use as a guide. I'm using a MySQL database. ``` <?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="a11_DA_g5_PU" transaction-type="JTA"> <jta-data-source>a11_DA_g5</jta-data-source> <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider> <class>entities.Book</class> <class>entities.Author</class> <class>entities.Customer</class> <class>entities.Membership</class> <properties> <property name="eclipselink.target-database" value="DERBY"/> <property name="javax.persistence.jdbc.driver" value="org.apache.derby.jdbc.ClientDriver"/> <property name="javax.persistence.jdbc.url" value="jdbc:mysql://studev.groept.be:3306/a11_DA_g5"/> <property name="javax.persistence.jdbc.user" value="a11_DA_g5"/> <property name="javax.persistence.jdbc.password" value="passwordhere"/> <property name="eclipselink.ddl-generation" value="create-tables"/> </properties> </persistence-unit> </persistence> ``` EDIT SEVERE: DPL8015: Invalid Deployment Descriptors in Deployment descriptor file META-INF/persistence.xml in archive [EJBModule_jar]. Line 6 Column 15 -- cvc-complex-type.2.4.a: Invalid content was found starting with element 'provider'. One of '{"http://java.sun.com/xml/ns/persistence":shared-cache-mode, "http://java.sun.com/xml/ns/persistence":validation-mode, "http://java.sun.com/xml/ns/persistence":properties}' is expected. SEVERE: DPL8005: Deployment Descriptor parsing failure : cvc-complex-type.2.4.a: Invalid content was found starting with element 'provider'. One of '{"http://java.sun.com/xml/ns/persistence":shared-cache-mode, "http://java.sun.com/xml/ns/persistence":validation-mode, "http://java.sun.com/xml/ns/persistence":properties}' is expected. SEVERE: Exception while deploying the app [VaadinTestApp] SEVERE: org.xml.sax.SAXParseException: cvc-complex-type.2.4.a: Invalid content was found starting with element 'provider'. One of '{"http://java.sun.com/xml/ns/persistence":shared-cache-mode, "http://java.sun.com/xml/ns/persistence":validation-mode, "http://java.sun.com/xml/ns/persistence":properties}' is expected. java.io.IOException: org.xml.sax.SAXParseException: cvc-complex-type.2.4.a: Invalid content was found starting with element 'provider'. One of '{"http://java.sun.com/xml/ns/persistence":shared-cache-mode, "http://java.sun.com/xml/ns/persistence":validation-mode, "http://java.sun.com/xml/ns/persistence":properties}' is expected.