diff --git a/database/migrations/task1/2021_11_08_091231_create_tasks_table.php b/database/migrations/task1/2021_11_08_091231_create_tasks_table.php
index 08bf628f..f580e22a 100644
--- a/database/migrations/task1/2021_11_08_091231_create_tasks_table.php
+++ b/database/migrations/task1/2021_11_08_091231_create_tasks_table.php
@@ -1,22 +1,19 @@
 <?php
 
+use App\Models\User;
 use Illuminate\Database\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 
-class CreateTasksTable extends Migration
-{
+class CreateTasksTable extends Migration {
     /**
      * Run the migrations.
      *
-     * @return void
      */
-    public function up()
-    {
+    public function up() {
         Schema::create('tasks', function (Blueprint $table) {
             $table->id();
-            $table->bigInteger('user_id');
-            $table->foreign('user_id')->references('id')->on('users');
+            $table->foreignIdFor(User::class);
             $table->string('name');
             $table->timestamps();
         });
@@ -25,10 +22,8 @@ public function up()
     /**
      * Reverse the migrations.
      *
-     * @return void
      */
-    public function down()
-    {
+    public function down() {
         Schema::dropIfExists('tasks');
     }
 }
diff --git a/database/migrations/task1/2021_11_08_092943_create_comments_table.php b/database/migrations/task1/2021_11_08_092943_create_comments_table.php
index 0378294b..de69c6c9 100644
--- a/database/migrations/task1/2021_11_08_092943_create_comments_table.php
+++ b/database/migrations/task1/2021_11_08_092943_create_comments_table.php
@@ -1,24 +1,21 @@
 <?php
 
+use App\Models\Task;
+use App\Models\User;
 use Illuminate\Database\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 
-class CreateCommentsTable extends Migration
-{
+class CreateCommentsTable extends Migration {
     /**
      * Run the migrations.
      *
-     * @return void
      */
-    public function up()
-    {
+    public function up() {
         Schema::create('comments', function (Blueprint $table) {
             $table->id();
-            $table->unsignedInteger('user_id');
-            $table->foreign('user_id')->references('id')->on('users');
-            $table->unsignedInteger('comment_id');
-            $table->foreign('comment_id')->references('id')->on('comments');
+            $table->foreignIdFor(User::class);
+            $table->foreignIdFor(Task::class);
             $table->string('comment_text');
             $table->timestamps();
         });
@@ -27,10 +24,8 @@ public function up()
     /**
      * Reverse the migrations.
      *
-     * @return void
      */
-    public function down()
-    {
+    public function down() {
         Schema::dropIfExists('comments');
     }
 }
diff --git a/database/migrations/task10/2021_11_09_090858_create_visitors_table.php b/database/migrations/task10/2021_11_09_090858_create_visitors_table.php
index 7a53968c..846cd1f6 100644
--- a/database/migrations/task10/2021_11_09_090858_create_visitors_table.php
+++ b/database/migrations/task10/2021_11_09_090858_create_visitors_table.php
@@ -4,19 +4,16 @@
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 
-class CreateVisitorsTable extends Migration
-{
+class CreateVisitorsTable extends Migration {
     /**
      * Run the migrations.
      *
-     * @return void
      */
-    public function up()
-    {
+    public function up() {
         // TASK: edit this migration so country_id would allow NULL values
         Schema::create('visitors', function (Blueprint $table) {
             $table->id();
-            $table->foreignId('country_id')->constrained();
+            $table->foreignId('country_id')->nullable()->constrained();
             $table->string('ip_address');
             $table->timestamps();
         });
@@ -25,10 +22,8 @@ public function up()
     /**
      * Reverse the migrations.
      *
-     * @return void
      */
-    public function down()
-    {
+    public function down() {
         Schema::dropIfExists('visitors');
     }
 }
diff --git a/database/migrations/task2/2021_11_09_075928_add_surname_to_users_table.php b/database/migrations/task2/2021_11_09_075928_add_surname_to_users_table.php
index 5a3422a4..4fff8962 100644
--- a/database/migrations/task2/2021_11_09_075928_add_surname_to_users_table.php
+++ b/database/migrations/task2/2021_11_09_075928_add_surname_to_users_table.php
@@ -4,30 +4,26 @@
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 
-class AddSurnameToUsersTable extends Migration
-{
+class AddSurnameToUsersTable extends Migration {
     /**
      * Run the migrations.
      *
-     * @return void
      */
-    public function up()
-    {
+    public function up() {
         Schema::table('users', function (Blueprint $table) {
             // TASK: Add a string field "surname" which would go after the field "name"
             // Write code here
+            $table->string('surname')->after('name');
         });
     }
 
     /**
      * Reverse the migrations.
      *
-     * @return void
      */
-    public function down()
-    {
+    public function down() {
         Schema::table('users', function (Blueprint $table) {
-            //
+            $table->removeColumn('surname');
         });
     }
 }
diff --git a/database/migrations/task3/2021_11_09_080955_create_projects_table.php b/database/migrations/task3/2021_11_09_080955_create_projects_table.php
index 9dc9d7b5..fceff5b2 100644
--- a/database/migrations/task3/2021_11_09_080955_create_projects_table.php
+++ b/database/migrations/task3/2021_11_09_080955_create_projects_table.php
@@ -4,31 +4,27 @@
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 
-class CreateProjectsTable extends Migration
-{
+class CreateProjectsTable extends Migration {
     /**
      * Run the migrations.
      *
-     * @return void
      */
-    public function up()
-    {
+    public function up() {
         Schema::create('projects', function (Blueprint $table) {
             $table->id();
             $table->string('name');
             $table->timestamps();
 
             // TASK: Add soft deletes column here
+            $table->softDeletes();
         });
     }
 
     /**
      * Reverse the migrations.
      *
-     * @return void
      */
-    public function down()
-    {
+    public function down() {
         Schema::dropIfExists('projects');
     }
 }
diff --git a/database/migrations/task4/2021_11_09_082205_create_products_table.php b/database/migrations/task4/2021_11_09_082205_create_products_table.php
index 78636019..fbca1ede 100644
--- a/database/migrations/task4/2021_11_09_082205_create_products_table.php
+++ b/database/migrations/task4/2021_11_09_082205_create_products_table.php
@@ -4,19 +4,16 @@
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 
-class CreateProductsTable extends Migration
-{
+class CreateProductsTable extends Migration {
     /**
      * Run the migrations.
      *
-     * @return void
      */
-    public function up()
-    {
+    public function up() {
         // TASK: Edit this file, so that deleting category would auto-delete its products
         Schema::create('products', function (Blueprint $table) {
             $table->id();
-            $table->foreignId('category_id')->constrained();
+            $table->foreignId('category_id')->constrained()->cascadeOnDelete();
             $table->string('name');
             $table->timestamps();
         });
@@ -25,10 +22,8 @@ public function up()
     /**
      * Reverse the migrations.
      *
-     * @return void
      */
-    public function down()
-    {
+    public function down() {
         Schema::dropIfExists('products');
     }
 }
diff --git a/database/migrations/task5/2021_11_09_083121_update_users_table.php b/database/migrations/task5/2021_11_09_083121_update_users_table.php
index c10976a5..e7449804 100644
--- a/database/migrations/task5/2021_11_09_083121_update_users_table.php
+++ b/database/migrations/task5/2021_11_09_083121_update_users_table.php
@@ -4,16 +4,16 @@
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 
-class UpdateUsersTable extends Migration
-{
+class UpdateUsersTable extends Migration {
     /**
      * Run the migrations.
      *
-     * @return void
      */
-    public function up()
-    {
+    public function up() {
         // TASK: add an if-statement in this file to NOT add column if it already exists
+        if (Schema::hasColumn('users', 'name')) {
+            return;
+        }
         Schema::table('users', function (Blueprint $table) {
             $table->string('name');
         });
@@ -22,10 +22,12 @@ public function up()
     /**
      * Reverse the migrations.
      *
-     * @return void
      */
-    public function down()
-    {
-        //
+    public function down() {
+        if (Schema::hasColumn('users', 'name')) {
+            Schema::table('users', function (Blueprint $table) {
+                $table->dropColumn('name');
+            });
+        }
     }
 }
diff --git a/database/migrations/task5/2021_11_09_083225_recreate_users_table.php b/database/migrations/task5/2021_11_09_083225_recreate_users_table.php
index 6b15a7c6..e4d570ff 100644
--- a/database/migrations/task5/2021_11_09_083225_recreate_users_table.php
+++ b/database/migrations/task5/2021_11_09_083225_recreate_users_table.php
@@ -4,16 +4,16 @@
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 
-class RecreateUsersTable extends Migration
-{
+class RecreateUsersTable extends Migration {
     /**
      * Run the migrations.
      *
-     * @return void
      */
-    public function up()
-    {
+    public function up() {
         // TASK: add an if-statement in this file to NOT create table if it already exists
+        if (Schema::hasTable('users')) {
+            return;
+        }
         Schema::create('users', function (Blueprint $table) {
             $table->id();
             $table->string('name');
@@ -28,10 +28,10 @@ public function up()
     /**
      * Reverse the migrations.
      *
-     * @return void
      */
-    public function down()
-    {
-        //
+    public function down() {
+        if (Schema::hasTable('users')) {
+            Schema::dropIfExists('users');
+        }
     }
 }
diff --git a/database/migrations/task6/2021_11_09_083843_create_companies_table.php b/database/migrations/task6/2021_11_09_083843_create_companies_table.php
index 9554406a..2aca9b5b 100644
--- a/database/migrations/task6/2021_11_09_083843_create_companies_table.php
+++ b/database/migrations/task6/2021_11_09_083843_create_companies_table.php
@@ -4,19 +4,16 @@
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 
-class CreateCompaniesTable extends Migration
-{
+class CreateCompaniesTable extends Migration {
     /**
      * Run the migrations.
      *
-     * @return void
      */
-    public function up()
-    {
+    public function up() {
         // TASK: edit this migration so there couldn't be two companies with the same name
         Schema::create('companies', function (Blueprint $table) {
             $table->id();
-            $table->string('name');
+            $table->string('name')->unique();
             $table->timestamps();
         });
     }
@@ -24,10 +21,8 @@ public function up()
     /**
      * Reverse the migrations.
      *
-     * @return void
      */
-    public function down()
-    {
+    public function down() {
         Schema::dropIfExists('companies');
     }
 }
diff --git a/database/migrations/task7/2021_11_09_084922_create_new_companies_table.php b/database/migrations/task7/2021_11_09_084922_create_new_companies_table.php
index 868a2422..4d28b48b 100644
--- a/database/migrations/task7/2021_11_09_084922_create_new_companies_table.php
+++ b/database/migrations/task7/2021_11_09_084922_create_new_companies_table.php
@@ -4,20 +4,17 @@
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 
-class CreateNewCompaniesTable extends Migration
-{
+class CreateNewCompaniesTable extends Migration {
     /**
      * Run the migrations.
      *
-     * @return void
      */
-    public function up()
-    {
+    public function up() {
         // TASK: edit this migration so that if company is created without the name
         // its automatic value of name would be "My company"
         Schema::create('companies', function (Blueprint $table) {
             $table->id();
-            $table->string('name');
+            $table->string('name')->default('My company');
             $table->timestamps();
         });
     }
@@ -25,10 +22,8 @@ public function up()
     /**
      * Reverse the migrations.
      *
-     * @return void
      */
-    public function down()
-    {
+    public function down() {
         Schema::dropIfExists('companies');
     }
 }
diff --git a/database/migrations/task8/2021_11_09_085453_rename_companies_table.php b/database/migrations/task8/2021_11_09_085453_rename_companies_table.php
index dc4ae6f2..ace51539 100644
--- a/database/migrations/task8/2021_11_09_085453_rename_companies_table.php
+++ b/database/migrations/task8/2021_11_09_085453_rename_companies_table.php
@@ -4,25 +4,22 @@
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 
-class RenameCompaniesTable extends Migration
-{
+class RenameCompaniesTable extends Migration {
     /**
      * Run the migrations.
      *
-     * @return void
      */
-    public function up()
-    {
+    public function up() {
         // TASK: add a migration to rename table "company" into "companies"
+        Schema::rename('company', 'companies');
     }
 
     /**
      * Reverse the migrations.
      *
-     * @return void
      */
-    public function down()
-    {
-        //
+    public function down() {
+        // TASK: add a migration to rename table "companies" into "company"
+        Schema::rename('companies', 'company');
     }
 }
diff --git a/database/migrations/task9/2021_11_09_090018_rename_name_in_companies_table.php b/database/migrations/task9/2021_11_09_090018_rename_name_in_companies_table.php
index f270c9e7..49a74304 100644
--- a/database/migrations/task9/2021_11_09_090018_rename_name_in_companies_table.php
+++ b/database/migrations/task9/2021_11_09_090018_rename_name_in_companies_table.php
@@ -4,30 +4,25 @@
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 
-class RenameNameInCompaniesTable extends Migration
-{
+class RenameNameInCompaniesTable extends Migration {
     /**
      * Run the migrations.
      *
-     * @return void
      */
-    public function up()
-    {
+    public function up() {
         // TASK: write the migration to rename the column "title" into "name"
         Schema::table('companies', function (Blueprint $table) {
-            // Write code here
+            $table->renameColumn('title', 'name');
         });
     }
 
     /**
      * Reverse the migrations.
      *
-     * @return void
      */
-    public function down()
-    {
+    public function down() {
         Schema::table('companies', function (Blueprint $table) {
-            //
+            $table->renameColumn('name', 'title');
         });
     }
 }