I'm creating migration like below. I couldn't find a way to seed db. Looking for something similar db:seed in laravel ?
public function up(Schema $schema)
{
$table = $schema->createTable('user_map');
$table->addColumn('id', 'integer', ['autoincrement'=>true]);
$table->addColumn('user_id', 'integer', ['notnull'=>true]);
$table->addColumn('relation_id', 'integer', ['notnull'=>true]);
$table->setPrimaryKey(['id']);
$table->addOption('engine' , 'InnoDB');
}