$table->bigIncrements('id') ;
Incrementing ID (primary key) using a " UNSIGNED BIG INTEGER" equivalent.
$table->increments('id')
$table->smallIncrements('id')
Schema::create('roles', function (Blueprint $table) {
$table->tinyInteger('id')->unsigned()->autoIncrement();
$table->string('name');
$table->string('display_name');
}); Schema::create('permissions', function (Blueprint $table) {
$table->smallIncrements('id');
$table->string('name');
$table->string('display_name');
}); Schema::create('permission_role', function (Blueprint $table) {
$table->smallInteger('permission_id')->unsigned();
$table->tinyInteger('role_id')->unsigned();
$table->foreign('permission_id')->references('id')->on('permissions')->onDelete('cascade');
$table->foreign('role_id')->references('id')->on('roles')->onDelete('cascade');
});
smallint 65535
tinyint 255