Expanded class hierarchy of Schema in Drupal 8
- class \Drupal\Core\Database\Schema implements PlaceholderInterface
- class \Drupal\Core\Database\Driver\mysql\Schema
- class \Drupal\driver_test\Driver\Database\DrivertestMysql\Schema
- class \Drupal\schema\SchemaDatabaseSchema_mysql implements DatabaseSchemaInspectionInterface
- class \Drupal\Core\Database\Driver\pgsql\Schema
- class \Drupal\Core\Database\Driver\sqlite\Schema
- class \Drupal\Driver\Database\sqlsrv\Schema
- class \Drupal\Driver\Database\sqlsrv\Schema
- class \Drupal\Core\Database\Driver\mysql\Schema