Contexts and Dependency Injection for Java (CDI) 1.0

[META-INF/beans.xml|WEB-INF/beans.xml]

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/beans_1_0.xsd">

</beans>

Java Persistence API (JPA) 2.0

META-INF/persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence 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"
    version="2.0">

</persistence>

Enterprise JavaBeans (EJB) 3.1

META-INF/ejb-jar.xml

<?xml version="1.0" encoding="UTF-8"?>
<ejb-jar xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/ejb-jar_3_1.xsd"
    version="3.1">

</ejb-jar>

JBoss Specific Deployment Descriptor

[META-INF/jboss-ejb3.xml|WEB-INF/jboss-ejb3.xml]

<?xml version="1.0" encoding="UTF-8"?>
<jboss:jboss xmlns="http://java.sun.com/xml/ns/javaee" xmlns:jboss="http://www.jboss.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:s="urn:security:1.1"
    version="3.1" impl-version="2.0">

</jboss:jboss>

Reference

WildFly Securing EJBs

Java Servlet 3.0

WEB-INF/web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    version="3.0">

</web-app>

JBoss Specific Deployment Descriptor

WEB-INF/jboss-web

<?xml version="1.0" encoding="UTF-8"?>
<jboss-web xmlns="http://www.jboss.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.jboss.com/xml/ns/javaee http://www.jboss.org/j2ee/schema/jboss-web_7_0.xsd"
    version="7.0">

</jboss-web>