exchange-2.0/database/migrations/2021_05_26_094333_create_announcements_table.php

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateAnnouncementsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('announcements', function (Blueprint $table) {
            $table->id();
            $table->string('title', 50);
            $table->longText('description');
            $table->timestamp('starting_on')->nullable();
            $table->timestamp('ending_on')->nullable();
            $table->boolean('is_all_day')->default(false);
            $table->integer('duration')->default(0);
            $table->boolean('is_recurring')->default(false);
            $table->string('recurrence_pattern')->nullable();
            $table->softDeletes();
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('announcements');
    }
}