Command line example:
mvn clean compile hibernate3:hbm2ddl

			<!-- 
				Hibernate 3 Plugin, used for schema creation
				Usage example: mvn clean compile hibernate3:hbm2ddl
			 -->
			<plugin>
				<groupId>org.codehaus.mojo</groupId>
				<artifactId>hibernate3-maven-plugin</artifactId>
				<version>2.0-alpha-2</version>
				<configuration>
					<components>
						<component>
							<name>hbm2ddl</name>
							<implementation>annotationconfiguration</implementation>																									
						</component>							
					</components>
					<componentProperties>		
						<!-- Create Drop Statements -->					
						<drop>false</drop>
						<!-- Enable Annotations -->
						<jdk5>true</jdk5>
						<!-- Define Database Properties to Use -->
						<propertyfile>target/classes/database.properties</propertyfile>
						<!-- Pretty Format SQL Code -->
						<format>true</format>
						<!-- Create tables automatically? -->
						<export>false</export>
						<!-- Output filename -->
						<outputfilename>schema.sql</outputfilename>
					</componentProperties>
				</configuration>						
				<dependencies>
					<dependency>
						<groupId>com.oracle</groupId>
						<artifactId>ojdbc14</artifactId>
						<version>${oracle-driver.version}</version>
					</dependency>
				</dependencies>