I have migration for ecommerce: category and product table. I need subcategory table This is shema for category table :

Schema::create('categories', function($table){ $table->increments('id'); $table->string('name'); $table->timestamps(); });

and product shema:

	Schema::create('products', function($table){
		$table->increments('id');
		$table->integer('category_id')->unsigned();
		$table->foreign('category_id')->references('id')->on('categories');
		$table->string('title');
		$table->text('description');
		$table->decimal('price', 6, 2);
		$table->boolean('availability')->default(1);
		$table->string('image');
		$table->timestamps();
	});

How to make subcategoru shema?