<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-unit name="tarefas">

        <!-- provedor/implementacao do JPA -->
        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>

        <!-- entidade mapeada -->
        <class>rest.model.Tarefa</class>

        <properties>
            <!-- dados da conexao -->
            <property name="javax.persistence.jdbc.driver"
                value="org.postgresql.Driver" />
            <property name="javax.persistence.jdbc.url"
                value="jdbc:postgresql://localhost:5432/projeto" />
            <property name="javax.persistence.jdbc.user"
                value="postgres" />
            <property name="javax.persistence.jdbc.password"
                value="postgres" />

            <!-- propriedades do hibernate -->
            <property name="hibernate.dialect"
                value="org.hibernate.dialect.PostgreSQLDialect" />
            <property name="hibernate.show_sql" value="true" />
            <property name="hibernate.format_sql" value="true" />

            <!-- atualiza o banco, gera as tabelas se for preciso -->
            <property name="hibernate.hbm2ddl.auto" value="update" />

        </properties>
    </persistence-unit>

</persistence>