An example of how to have Maven and Hibernate 4 generate your DDL for you... See http://mydevnotes.nicus.it/2013/03/generate-ddl-with-maven-jpa-hibernate-4.html

hibernate.hbm2ddl.properties

# stashed in src/main/resources
hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect
hibernate.ejb.naming_strategy=org.hibernate.cfg.ImprovedNamingStrategy
hibernate.connection.charSet=UTF-8
hibernate.export.schema.delimiter=;

pom.xml

<build>
	<plugins>
		<plugin>
		    	<groupId>de.juplo</groupId>
			<artifactId>hibernate4-maven-plugin</artifactId>
			<version>1.0.1</version>
			<executions>
				<execution>
					<goals>
						<goal>export</goal>
					</goals>
				</execution>
			</executions>
			<configuration>
				<hibernateProperties>${project.build.directory}/classes/hibernate.hbm2ddl.properties</hibernateProperties>
				<target>SCRIPT</target>
			</configuration>
		</plugin>
	</plugins>
</build>