mysql 10.1.21-mariadb的方言类叫什么?

我在用马里亚布方言课

<hibernate-configuration>
<session-factory>
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/Book</property>
    <property name="hibernate.connection.username">root</property>
    <property name="hibernate.connection.password"></property>
    <property name="hibernate.connection.pool_size">1</property>
    <property name="hibernate.current_session_context_class">thread</property>
    <property name="hibernate.show_sql">true</property>
    <property name="hibernate.dialect">org.hibernate.dialect.MariaDBDialect</property>

    <mapping class="com.yazeed.brain.dto.User" />
</session-factory>

Exception in thread "main" org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
Caused by: org.hibernate.exception.SQLGrammarException: Error calling Driver#connect 
Caused by: java.sql.SQLSyntaxErrorException: Unknown database 'book'