Drupal 8 DB Configuration

settings.php

$dbopts['scheme'] = 'postgres';
$databases['default']['default'] = array(
  'database' => 'my_database_name',
  'username' => 'deltorosalazar',
  'password' => '',
  'prefix' => '',
  'host' => '127.0.0.1',
  'port' => '5432',
  'namespace' => 'Drupal\\Core\\Database\\Driver\\pgsql',
  'driver' => $dbopts['scheme'] === 'postgres' ? 'pgsql' : 'mysql',
);