protected Schema::getPrefixInfo($table = 'default', $add_prefix = TRUE)

public Schema::fieldSetDefault($table, $field, $default)

public Schema::fieldExists($table, $column)

protected Schema::createFieldSql($name, $spec)

protected Schema::createKeysSql($spec)

public Schema::dropTable($table) Drop

public Schema::dropField($table, $field) Drop

protected Schema::processField($field) Set

public Schema::renameTable($table, $new_name)

public Schema::addIndex($table, $name, $fields, array $spec)