diff --git a/be/app/Http/Resources/ClientResource.php b/be/app/Http/Resources/ClientResource.php
new file mode 100644
index 0000000..edb146a
--- /dev/null
+++ b/be/app/Http/Resources/ClientResource.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Http\Resources;
+
+use Illuminate\Http\Resources\Json\JsonResource;
+
+class ClientResource extends JsonResource
+{
+    /**
+     * Transform the resource into an array.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @return array|\Illuminate\Contracts\Support\Arrayable|\JsonSerializable
+     */
+
+    public function toArray($request)
+    {
+        return [
+            'id' => $this->id,
+            'name' => $this->name,
+            'code' => $this->code,
+            'client' => ClientResource::collection($this->users),
+            'updated_at' => $this->updated_at,
+        ];
+    }
+}
diff --git a/be/app/Http/Resources/ProjectCollection.php b/be/app/Http/Resources/ProjectCollection.php
new file mode 100644
index 0000000..da2153f
--- /dev/null
+++ b/be/app/Http/Resources/ProjectCollection.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Http\Resources;
+
+use Illuminate\Http\Resources\Json\ResourceCollection;
+
+class ProjectCollection extends ResourceCollection
+{
+    /**
+     * Transform the resource collection into an array.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @return array|\Illuminate\Contracts\Support\Arrayable|\JsonSerializable
+     */
+
+
+    public function toArray($request)
+    {
+        return [
+            'data' => $this->collection,
+            'status' => 200,
+        ];
+    }
+
+}
diff --git a/be/app/Http/Resources/ProjectResource.php b/be/app/Http/Resources/ProjectResource.php
new file mode 100644
index 0000000..e46c124
--- /dev/null
+++ b/be/app/Http/Resources/ProjectResource.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Http\Resources;
+
+use Illuminate\Http\Resources\Json\JsonResource;
+
+class ProjectResource extends JsonResource
+{
+    /**
+     * Transform the resource into an array.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @return array|\Illuminate\Contracts\Support\Arrayable|\JsonSerializable
+     */
+
+    public function toArray($request)
+    {
+        return [
+            'id' => $this->id,
+            'name' => $this->name,
+            'code' => $this->code,
+            'client' => $this->client,
+        ];
+    }
+}
diff --git a/be/app/Models/Attachment.php b/be/app/Models/Attachment.php
new file mode 100644
index 0000000..5ad608d
--- /dev/null
+++ b/be/app/Models/Attachment.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Attachment extends Model
+{
+    use HasFactory;
+
+    public $timestamps = true;
+
+    public function subtask()
+    {
+        return $this->belongsTo(SubTask::class);
+    }
+}
diff --git a/be/app/Models/Client.php b/be/app/Models/Client.php
new file mode 100644
index 0000000..cee0082
--- /dev/null
+++ b/be/app/Models/Client.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Client extends Model
+{
+    use HasFactory;
+
+    public $timestamps = true;
+
+    public function projects()
+    {
+        return $this->hasMany(Project::class);
+    }
+}
diff --git a/be/app/Models/MasterTask.php b/be/app/Models/MasterTask.php
new file mode 100644
index 0000000..68fa209
--- /dev/null
+++ b/be/app/Models/MasterTask.php
@@ -0,0 +1,28 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class MasterTask extends Model
+{
+    use HasFactory;
+
+    public $timestamps = true;
+
+    public function subtasks()
+    {
+        return $this->hasMany(SubTask::class);
+    }
+
+    public function project()
+    {
+        return $this->belongsTo(Project::class);
+    }
+
+    public function attachments()
+    {
+        return $this->hasMany(Attachment::class);
+    }
+}
diff --git a/be/app/Models/Project.php b/be/app/Models/Project.php
new file mode 100644
index 0000000..2b76a5e
--- /dev/null
+++ b/be/app/Models/Project.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Project extends Model
+{
+    use HasFactory;
+
+    public $timestamps = true;
+
+    public function client()
+    {
+        return $this->belongsTo(Client::class);
+    }
+
+    public function mastertasks()
+    {
+        return $this->hasMany(MasterTask::class);
+    }
+}
diff --git a/be/app/Models/SubTask.php b/be/app/Models/SubTask.php
new file mode 100644
index 0000000..4736f8a
--- /dev/null
+++ b/be/app/Models/SubTask.php
@@ -0,0 +1,35 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class SubTask extends Model
+{
+    use HasFactory;
+
+    public $timestamps = true;
+
+    public function mastertask()
+    {
+        return $this->belongsTo(MasterTask::class);
+    }
+
+    public function user()
+    {
+        return $this->belongsTo(MasterTask::class);
+    }
+
+    public function timeblocks()
+    {
+        return $this->hasMany(Timeblock::class);
+    }
+
+    public function timesheets()
+    {
+        return $this->hasMany(Timesheet::class);
+    }
+}
+
+
diff --git a/be/app/Models/Team.php b/be/app/Models/Team.php
index aa26518..ace6c1a 100644
--- a/be/app/Models/Team.php
+++ b/be/app/Models/Team.php
@@ -10,9 +10,8 @@ class Team extends Model
     use HasFactory;
 
     public $timestamps = true;
-    protected $guarded = ['id', 'name'];
 
-    protected $table = 'teams';
+    protected $guarded = ['id', 'name'];
 
     public function users()
     {
diff --git a/be/app/Models/Timeblock.php b/be/app/Models/Timeblock.php
new file mode 100644
index 0000000..fe0cc3c
--- /dev/null
+++ b/be/app/Models/Timeblock.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Timeblock extends Model
+{
+    use HasFactory;
+
+    public $timestamps = true;
+
+    public function subtask()
+    {
+        return $this->belongsTo(SubTask::class);
+    }
+}
diff --git a/be/app/Models/Timesheet.php b/be/app/Models/Timesheet.php
new file mode 100644
index 0000000..b61a4fc
--- /dev/null
+++ b/be/app/Models/Timesheet.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Timesheet extends Model
+{
+    use HasFactory;
+
+    public $timestamps = true;
+
+    public function subtask()
+    {
+        return $this->belongsTo(SubTask::class);
+    }
+
+    public function user()
+    {
+        return $this->belongsTo(User::class);
+    }
+}
diff --git a/be/app/Models/User.php b/be/app/Models/User.php
index a13a05a..8640624 100644
--- a/be/app/Models/User.php
+++ b/be/app/Models/User.php
@@ -37,4 +37,14 @@ class User extends Authenticatable
         return $this->belongsToMany(Team::class);
     }
 
+    public function timesheets()
+    {
+        return $this->hasMany(Timesheet::class);
+    }
+
+    public function subtasks()
+    {
+        return $this->hasMany(SubTask::class);
+    }
+
 }
diff --git a/be/database/factories/AttachmentFactory.php b/be/database/factories/AttachmentFactory.php
new file mode 100644
index 0000000..9ff64ec
--- /dev/null
+++ b/be/database/factories/AttachmentFactory.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace Database\Factories;
+
+use Illuminate\Database\Eloquent\Factories\Factory;
+use Illuminate\Support\Str;
+
+/**
+ * @extends \Illuminate\Database\Eloquent\Factories\Factory<\App\Models\Attachment>
+ */
+class AttachmentFactory extends Factory
+{
+    /**
+     * Define the model's default state.
+     *
+     * @return array<string, mixed>
+     */
+    public function definition()
+    {
+        $extension = fake()->fileExtension();
+
+        return [
+            'original_name' => fake()->words(2, true) . '.' . $extension,
+            'disk_name' => Str::random(15) . '.' . $extension,
+            'path' => fake()->imageUrl(),
+            'extension' => $extension,
+            'content_type' => fake()->mimeType(),
+            'file_size' => fake()->numberBetween(1323,992385),
+        ];
+    }
+
+}
diff --git a/be/database/factories/ClientFactory.php b/be/database/factories/ClientFactory.php
new file mode 100644
index 0000000..8603289
--- /dev/null
+++ b/be/database/factories/ClientFactory.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace Database\Factories;
+
+use Illuminate\Database\Eloquent\Factories\Factory;
+use Illuminate\Support\Str;
+
+/**
+ * @extends \Illuminate\Database\Eloquent\Factories\Factory<\App\Models\Client>
+ */
+class ClientFactory extends Factory
+{
+    /**
+     * Define the model's default state.
+     *
+     * @return array<string, mixed>
+     */
+    public function definition()
+    {
+        $company = fake()->company();
+
+        return [
+            'name' => $company,
+            'code' => strtoupper(substr($company, 0, 5)),
+        ];
+    }
+}
diff --git a/be/database/factories/MasterTaskFactory.php b/be/database/factories/MasterTaskFactory.php
new file mode 100644
index 0000000..62a5a42
--- /dev/null
+++ b/be/database/factories/MasterTaskFactory.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace Database\Factories;
+
+use App\Models\Client;
+use App\Models\Project;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+/**
+ * @extends \Illuminate\Database\Eloquent\Factories\Factory<\App\Models\MasterTask>
+ */
+class MasterTaskFactory extends Factory
+{
+    /**
+     * Define the model's default state.
+     *
+     * @return array<string, mixed>
+     */
+    public function definition()
+    {
+        $project = Project::factory()->create();
+
+        return [
+            'project_id' => $project->id,
+            'title' => 'Master task ' . fake()->words(2, true),
+            'estimated_time' => fake()->numberBetween(20,100),
+            'tracked_time' => fake()->numberBetween(4,20),
+            'deadline' => fake()->date(),
+            'is_finished' => 0,
+        ];
+    }
+}
diff --git a/be/database/factories/ProjectFactory.php b/be/database/factories/ProjectFactory.php
new file mode 100644
index 0000000..133e953
--- /dev/null
+++ b/be/database/factories/ProjectFactory.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace Database\Factories;
+
+use App\Models\Client;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+/**
+ * @extends \Illuminate\Database\Eloquent\Factories\Factory<\App\Models\Project>
+ */
+class ProjectFactory extends Factory
+{
+    /**
+     * Define the model's default state.
+     *
+     * @return array<string, mixed>
+     */
+
+    public function definition()
+    {
+        $name = fake()->country();
+
+        $client = Client::factory('App\Models\Client')->create();
+
+        return [
+            'client_id' => $client->id,
+            'name' => 'Project ' . $name,
+            'code' => strtoupper(substr($name, 0, 3)) . '-2023-' . rand(1, 9),
+        ];
+
+
+    }
+}
diff --git a/be/database/factories/SubTaskFactory.php b/be/database/factories/SubTaskFactory.php
new file mode 100644
index 0000000..b72de59
--- /dev/null
+++ b/be/database/factories/SubTaskFactory.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace Database\Factories;
+
+use App\Models\Client;
+use App\Models\MasterTask;
+use App\Models\User;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+/**
+ * @extends \Illuminate\Database\Eloquent\Factories\Factory<\App\Models\SubTask>
+ */
+class SubTaskFactory extends Factory
+{
+    /**
+     * Define the model's default state.
+     *
+     * @return array<string, mixed>
+     */
+    public function definition()
+    {
+//        $user = User::factory()->create();
+//        $mastertask = MasterTask::factory()->hasAttachments(random_int(0 , 3))->create();
+
+        return [
+            'user_id' => 1,
+//            'master_task_id' => $mastertask->id,
+            'estimated_time' => fake()->numberBetween(1,16),
+            'tracked_time' => fake()->numberBetween(4,20),
+            'is_finished' => 0,
+        ];
+    }
+}
diff --git a/be/database/factories/TeamFactory.php b/be/database/factories/TeamFactory.php
index 4ae446c..740ae13 100644
--- a/be/database/factories/TeamFactory.php
+++ b/be/database/factories/TeamFactory.php
@@ -18,7 +18,7 @@ class TeamFactory extends Factory
     public function definition()
     {
         return [
-            'name' => fake()->company(),
+            'name' => 'Team ' . fake()->colorName(),
         ];
     }
 }
diff --git a/be/database/factories/TimeblockFactory.php b/be/database/factories/TimeblockFactory.php
new file mode 100644
index 0000000..e7557c4
--- /dev/null
+++ b/be/database/factories/TimeblockFactory.php
@@ -0,0 +1,28 @@
+<?php
+
+namespace Database\Factories;
+
+use Carbon\Carbon;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+/**
+ * @extends \Illuminate\Database\Eloquent\Factories\Factory<\App\Models\Timeblock>
+ */
+class TimeblockFactory extends Factory
+{
+    /**
+     * Define the model's default state.
+     *
+     * @return array<string, mixed>
+     */
+    public function definition()
+    {
+        $start = fake()->dateTimeBetween('now', '+3 weeks');
+        $end = Carbon::instance($start)->addHours(fake()->numberBetween(3, 5));
+
+        return [
+            'start' => $start,
+            'end' => fake()->dateTimeBetween($start, $end),
+        ];
+    }
+}
diff --git a/be/database/factories/TimesheetFactory.php b/be/database/factories/TimesheetFactory.php
new file mode 100644
index 0000000..b811132
--- /dev/null
+++ b/be/database/factories/TimesheetFactory.php
@@ -0,0 +1,28 @@
+<?php
+
+namespace Database\Factories;
+
+use App\Models\User;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+/**
+ * @extends \Illuminate\Database\Eloquent\Factories\Factory<\App\Models\Timesheet>
+ */
+class TimesheetFactory extends Factory
+{
+    /**
+     * Define the model's default state.
+     *
+     * @return array<string, mixed>
+     */
+    public function definition()
+    {
+        $user = User::factory()->create();
+
+        return [
+            'user_id' => $user->id,
+            'time' => fake()->numberBetween(1,8),
+            'synced_to_karat' => null,
+        ];
+    }
+}
diff --git a/be/database/factories/UserFactory.php b/be/database/factories/UserFactory.php
index 8b200c5..de67ac5 100644
--- a/be/database/factories/UserFactory.php
+++ b/be/database/factories/UserFactory.php
@@ -17,15 +17,18 @@ class UserFactory extends Factory
      */
     public function definition()
     {
+        $firstname = fake()->firstname();
+        $lastname = fake()->lastname();
+
         return [
-            'email' => fake()->unique()->safeEmail(),
+            'email' => strtolower($firstname . '.' . $lastname . '@jandl.sk'),
             'password' => '$2y$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi', // password
             'remember_token' => Str::random(10),
-            'firstname' => fake()->firstname(),
-            'lastname' => fake()->lastname(),
-            'code' => strtoupper(Str::random(3)),
-            'work_start' => '9.0',
-            'work_end' => '17.0',
+            'firstname' => $firstname,
+            'lastname' => $lastname,
+            'code' => strtoupper(substr($firstname, 0, 1) . substr($lastname, 0, 2)),
+            'work_start' => rand(7, 10) . '.0',
+            'work_end' => rand(15, 18) . '.0',
 
         ];
     }
diff --git a/be/database/migrations/2023_01_19_091424_create_clients_table.php b/be/database/migrations/2023_01_19_091424_create_clients_table.php
new file mode 100644
index 0000000..8fca634
--- /dev/null
+++ b/be/database/migrations/2023_01_19_091424_create_clients_table.php
@@ -0,0 +1,33 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('clients', function (Blueprint $table) {
+            $table->id();
+            $table->string('name');
+            $table->string('code');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('clients');
+    }
+};
diff --git a/be/database/migrations/2023_01_19_091939_create_projects_table.php b/be/database/migrations/2023_01_19_091939_create_projects_table.php
new file mode 100644
index 0000000..d55491a
--- /dev/null
+++ b/be/database/migrations/2023_01_19_091939_create_projects_table.php
@@ -0,0 +1,34 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('projects', function (Blueprint $table) {
+            $table->id();
+            $table->foreignIdFor(\App\Models\Client::class);
+            $table->string('name');
+            $table->string('code');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('projects');
+    }
+};
diff --git a/be/database/migrations/2023_01_19_100036_update_clients_table_for_unique_code.php b/be/database/migrations/2023_01_19_100036_update_clients_table_for_unique_code.php
new file mode 100644
index 0000000..b4e0930
--- /dev/null
+++ b/be/database/migrations/2023_01_19_100036_update_clients_table_for_unique_code.php
@@ -0,0 +1,30 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('clients', function (Blueprint $table) {
+            $table->unique('code');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        //
+    }
+};
diff --git a/be/database/migrations/2023_01_19_100047_update_projects_table_for_unique_code.php b/be/database/migrations/2023_01_19_100047_update_projects_table_for_unique_code.php
new file mode 100644
index 0000000..2cc88cf
--- /dev/null
+++ b/be/database/migrations/2023_01_19_100047_update_projects_table_for_unique_code.php
@@ -0,0 +1,30 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('projects', function (Blueprint $table) {
+            $table->unique('code');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        //
+    }
+};
diff --git a/be/database/migrations/2023_01_20_080241_create_master_task_table.php b/be/database/migrations/2023_01_20_080241_create_master_task_table.php
new file mode 100644
index 0000000..b1ed22b
--- /dev/null
+++ b/be/database/migrations/2023_01_20_080241_create_master_task_table.php
@@ -0,0 +1,40 @@
+<?php
+
+use App\Models\Project;
+use App\Models\Team;
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('master_tasks', function (Blueprint $table) {
+            $table->id();
+            $table->foreignIdFor( Project::class);
+            $table->foreignIdFor( Team::class)->nullable();
+            $table->string('title');
+            $table->float('estimated_time')->comment('tento field sa updatuje automaticky na zaklade subtaskov');
+            $table->float('tracked_time')->default(0)->comment('tento field sa updatuje automaticky na zaklade vykazov subtaskov');
+            $table->timestamp('deadline');
+            $table->boolean('is_finished')->default(false);
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('master_task');
+    }
+};
diff --git a/be/database/migrations/2023_01_20_085651_create_subtasks_table.php b/be/database/migrations/2023_01_20_085651_create_subtasks_table.php
new file mode 100644
index 0000000..62ec150
--- /dev/null
+++ b/be/database/migrations/2023_01_20_085651_create_subtasks_table.php
@@ -0,0 +1,40 @@
+<?php
+
+use App\Models\MasterTask;
+use App\Models\Project;
+use App\Models\Team;
+use App\Models\User;
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('sub_tasks', function (Blueprint $table) {
+            $table->id();
+            $table->foreignIdFor( MasterTask::class);
+            $table->foreignIdFor( User::class);
+            $table->float('estimated_time');
+            $table->float('tracked_time')->default(0)->comment('tento field sa updatuje automaticky na zaklade vykazov');
+            $table->boolean('is_finished')->default(false);
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('sub_tasks');
+    }
+};
diff --git a/be/database/migrations/2023_01_20_094052_create_attachments_table.php b/be/database/migrations/2023_01_20_094052_create_attachments_table.php
new file mode 100644
index 0000000..6ce5e2e
--- /dev/null
+++ b/be/database/migrations/2023_01_20_094052_create_attachments_table.php
@@ -0,0 +1,39 @@
+<?php
+
+use App\Models\MasterTask;
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('attachments', function (Blueprint $table) {
+            $table->id();
+            $table->foreignIdFor( MasterTask::class);
+            $table->string('original_name');
+            $table->string('disk_name');
+            $table->string('path');
+            $table->string('extension');
+            $table->string('content_type');
+            $table->bigInteger('file_size');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('attachments');
+    }
+};
diff --git a/be/database/migrations/2023_01_20_094959_create_timesheets_table.php b/be/database/migrations/2023_01_20_094959_create_timesheets_table.php
new file mode 100644
index 0000000..b716925
--- /dev/null
+++ b/be/database/migrations/2023_01_20_094959_create_timesheets_table.php
@@ -0,0 +1,37 @@
+<?php
+
+use App\Models\SubTask;
+use App\Models\User;
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('timesheets', function (Blueprint $table) {
+            $table->id();
+            $table->foreignIdFor( SubTask::class);
+            $table->foreignIdFor( User::class);
+            $table->float('time', 4);
+            $table->timestamp( 'synced_to_karat')->nullable()->default(null);
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('timesheets');
+    }
+};
diff --git a/be/database/migrations/2023_01_23_082423_create_timeblocks_table.php b/be/database/migrations/2023_01_23_082423_create_timeblocks_table.php
new file mode 100644
index 0000000..e41bf3a
--- /dev/null
+++ b/be/database/migrations/2023_01_23_082423_create_timeblocks_table.php
@@ -0,0 +1,35 @@
+<?php
+
+use App\Models\SubTask;
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('timeblocks', function (Blueprint $table) {
+            $table->id();
+            $table->foreignIdFor( SubTask::class);
+            $table->timestamp( 'start');
+            $table->timestamp( 'end');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('timeblocks');
+    }
+};
diff --git a/be/database/seeders/ClientSeeder.php b/be/database/seeders/ClientSeeder.php
new file mode 100644
index 0000000..68faf1a
--- /dev/null
+++ b/be/database/seeders/ClientSeeder.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace Database\Seeders;
+
+use App\Models\Client;
+use Illuminate\Database\Console\Seeds\WithoutModelEvents;
+use Illuminate\Database\Seeder;
+
+class ClientSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     *
+     * @return void
+     */
+    public function run()
+    {
+        Client::factory()
+            ->count(10)
+            ->hasProjects(3)
+            ->create();
+    }
+}
diff --git a/be/database/seeders/DatabaseSeeder.php b/be/database/seeders/DatabaseSeeder.php
index 76d96dc..ad6b5a9 100644
--- a/be/database/seeders/DatabaseSeeder.php
+++ b/be/database/seeders/DatabaseSeeder.php
@@ -3,6 +3,10 @@
 namespace Database\Seeders;
 
 // use Illuminate\Database\Console\Seeds\WithoutModelEvents;
+use App\Models\MasterTask;
+use App\Models\Project;
+use App\Models\Team;
+use App\Models\User;
 use Illuminate\Database\Seeder;
 
 class DatabaseSeeder extends Seeder
@@ -14,11 +18,25 @@ class DatabaseSeeder extends Seeder
      */
     public function run()
     {
-        // \App\Models\User::factory(10)->create();
+        for ($i=0; $i < 5; $i++) {
+            Team::factory()
+                ->hasUsers(random_int(2, 5))
+                ->create();
+        }
 
-        // \App\Models\User::factory()->create([
-        //     'name' => 'Test User',
-        //     'email' => 'test@example.com',
-        // ]);
+        for ($i=0; $i < 3; $i++) {
+            MasterTask::factory()
+                   ->hasAttachments(random_int(0, 3))
+                   ->hasSubTasks(random_int(3, 5))
+                   ->create();
+        }
+
+//        for ($i=0; $i < 3; $i++) {
+//            User::factory()
+//                ->hasSubTasks(3)
+////                      ->hasAttachments(random_int(0, 3))
+////                      ->hasSubTasks(random_int(3, 5))
+//                      ->create();
+//        }
     }
 }
diff --git a/be/database/seeders/MasterTaskSeeder.php b/be/database/seeders/MasterTaskSeeder.php
new file mode 100644
index 0000000..da7f115
--- /dev/null
+++ b/be/database/seeders/MasterTaskSeeder.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace Database\Seeders;
+
+use App\Models\MasterTask;
+use Illuminate\Database\Console\Seeds\WithoutModelEvents;
+use Illuminate\Database\Seeder;
+
+class MasterTaskSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     *
+     * @return void
+     */
+    public function run()
+    {
+        MasterTask::factory()
+                  ->hasAttachments(2)
+                  ->hasSubTasks(2)
+                  ->create();
+    }
+}
diff --git a/be/database/seeders/ProjectSeeder.php b/be/database/seeders/ProjectSeeder.php
new file mode 100644
index 0000000..d1520dc
--- /dev/null
+++ b/be/database/seeders/ProjectSeeder.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace Database\Seeders;
+
+use App\Models\MasterTask;
+use App\Models\Project;
+use App\Models\Team;
+use Illuminate\Database\Console\Seeds\WithoutModelEvents;
+use Illuminate\Database\Seeder;
+
+class ProjectSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     *
+     * @return void
+     */
+    public function run()
+    {
+        for ($i=0; $i < 20; $i++) {
+            Project::factory()
+                   ->hasMastertasks(2)
+                   ->create();
+        }
+    }
+}
diff --git a/be/database/seeders/SubTaskSeeder.php b/be/database/seeders/SubTaskSeeder.php
new file mode 100644
index 0000000..76a06a2
--- /dev/null
+++ b/be/database/seeders/SubTaskSeeder.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace Database\Seeders;
+
+use App\Models\SubTask;
+use Illuminate\Database\Console\Seeds\WithoutModelEvents;
+use Illuminate\Database\Seeder;
+
+class SubTaskSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     *
+     * @return void
+     */
+    public function run()
+    {
+        SubTask::factory()
+                  ->count(10)
+                  ->hasTimeblocks(2)
+                  ->hasTimesheets(2)
+                  ->create();
+    }
+}