<Context path="/greenstone3"
         docBase="%WEB%"
         reloadable="true"
         privileged="true"
         xmlBlockExternal="false">
    <Realm className="org.apache.catalina.realm.JDBCRealm" 
           driverName="org.apache.derby.jdbc.EmbeddedDriver"
           connectionURL="jdbc:derby:%WEB%/etc/usersDB"
           userTable="users"
           userNameCol="username"
           userCredCol="password"
           userRoleTable="roles"
           roleNameCol="role"
    />
</Context>
