create_productos_categorias_table.php

<?php
use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Eloquent\SoftDeletes;
class CreateProductosCategoriasTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('productos_categorias', function (Blueprint $table) {
            $table->bigIncrements('id');
            $table->integer('id_producto');
            $table->integer('id_categoria');
            $table->timestamps();
            $table->softDeletes();
        });
    }
    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('productos_categorias');
    }
}