Tomcat WebApp Context

<!-- PostgreSQL -->
<Resource name="jdbc/DatabaseNameDS" auth="Container"
    type="javax.sql.DataSource"
    maxActive="20" maxIdle="5" maxWait="10000"
    username="username" password="password"
    driverClassName="org.postgresql.Driver"
    url="jdbc:postgresql://localhost/database"/>

<!-- MySQL -->
<Resource name="jdbc/DatabaseNameDS" auth="Container"
    type="javax.sql.DataSource"
    maxActive="20" maxIdle="5" maxWait="10000"
    username="username" password="password"
    driverClassName="com.mysql.jdbc.Driver"
    url="jdbc:mysql://localhost/database"/>