diff --git a/backend/database/.gitignore b/backend/database/.gitignore
new file mode 100644
index 0000000..9b19b93
--- /dev/null
+++ b/backend/database/.gitignore
@@ -0,0 +1 @@
+*.sqlite*
diff --git a/backend/database/factories/ClientFactory.php b/backend/database/factories/ClientFactory.php
new file mode 100644
index 0000000..fb54537
--- /dev/null
+++ b/backend/database/factories/ClientFactory.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace Database\Factories;
+
+use App\Modules\Client\Models\Client;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+class ClientFactory extends Factory
+{
+    protected $model = Client::class;
+
+    public function definition(): array
+    {
+        return [
+            'client_number' => $this->faker->unique()->numerify('K###'),
+            'name' => $this->faker->company(),
+            'notes' => null,
+        ];
+    }
+}
diff --git a/backend/database/factories/HistoryEntryFactory.php b/backend/database/factories/HistoryEntryFactory.php
new file mode 100644
index 0000000..a951149
--- /dev/null
+++ b/backend/database/factories/HistoryEntryFactory.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace Database\Factories;
+
+use App\Models\User;
+use App\Modules\Client\Models\Client;
+use App\Modules\History\Models\HistoryEntry;
+use App\Modules\History\Models\HistoryEntryType;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+class HistoryEntryFactory extends Factory
+{
+    protected $model = HistoryEntry::class;
+
+    public function definition(): array
+    {
+        return [
+            'client_id' => Client::factory(),
+            'type' => $this->faker->randomElement(HistoryEntryType::cases())->value,
+            'body' => $this->faker->paragraph(),
+            'author_id' => User::factory(),
+            'updated_by' => null,
+        ];
+    }
+}
diff --git a/backend/database/factories/UserFactory.php b/backend/database/factories/UserFactory.php
new file mode 100644
index 0000000..584104c
--- /dev/null
+++ b/backend/database/factories/UserFactory.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace Database\Factories;
+
+use Illuminate\Database\Eloquent\Factories\Factory;
+use Illuminate\Support\Facades\Hash;
+use Illuminate\Support\Str;
+
+/**
+ * @extends \Illuminate\Database\Eloquent\Factories\Factory<\App\Models\User>
+ */
+class UserFactory extends Factory
+{
+    /**
+     * The current password being used by the factory.
+     */
+    protected static ?string $password;
+
+    /**
+     * Define the model's default state.
+     *
+     * @return array<string, mixed>
+     */
+    public function definition(): array
+    {
+        return [
+            'name' => fake()->name(),
+            'email' => fake()->unique()->safeEmail(),
+            'email_verified_at' => now(),
+            'password' => static::$password ??= Hash::make('password'),
+            'remember_token' => Str::random(10),
+        ];
+    }
+
+    /**
+     * Indicate that the model's email address should be unverified.
+     */
+    public function unverified(): static
+    {
+        return $this->state(fn (array $attributes) => [
+            'email_verified_at' => null,
+        ]);
+    }
+}
diff --git a/backend/database/migrations/2014_10_12_000000_create_users_table.php b/backend/database/migrations/2014_10_12_000000_create_users_table.php
new file mode 100644
index 0000000..444fafb
--- /dev/null
+++ b/backend/database/migrations/2014_10_12_000000_create_users_table.php
@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('users', function (Blueprint $table) {
+            $table->id();
+            $table->string('name');
+            $table->string('email')->unique();
+            $table->timestamp('email_verified_at')->nullable();
+            $table->string('password');
+            $table->rememberToken();
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('users');
+    }
+};
diff --git a/backend/database/migrations/2014_10_12_100000_create_password_reset_tokens_table.php b/backend/database/migrations/2014_10_12_100000_create_password_reset_tokens_table.php
new file mode 100644
index 0000000..81a7229
--- /dev/null
+++ b/backend/database/migrations/2014_10_12_100000_create_password_reset_tokens_table.php
@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('password_reset_tokens', function (Blueprint $table) {
+            $table->string('email')->primary();
+            $table->string('token');
+            $table->timestamp('created_at')->nullable();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('password_reset_tokens');
+    }
+};
diff --git a/backend/database/migrations/2019_08_19_000000_create_failed_jobs_table.php b/backend/database/migrations/2019_08_19_000000_create_failed_jobs_table.php
new file mode 100644
index 0000000..249da81
--- /dev/null
+++ b/backend/database/migrations/2019_08_19_000000_create_failed_jobs_table.php
@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('failed_jobs', function (Blueprint $table) {
+            $table->id();
+            $table->string('uuid')->unique();
+            $table->text('connection');
+            $table->text('queue');
+            $table->longText('payload');
+            $table->longText('exception');
+            $table->timestamp('failed_at')->useCurrent();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('failed_jobs');
+    }
+};
diff --git a/backend/database/migrations/2019_12_14_000001_create_personal_access_tokens_table.php b/backend/database/migrations/2019_12_14_000001_create_personal_access_tokens_table.php
new file mode 100644
index 0000000..e828ad8
--- /dev/null
+++ b/backend/database/migrations/2019_12_14_000001_create_personal_access_tokens_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.
+     */
+    public function up(): void
+    {
+        Schema::create('personal_access_tokens', function (Blueprint $table) {
+            $table->id();
+            $table->morphs('tokenable');
+            $table->string('name');
+            $table->string('token', 64)->unique();
+            $table->text('abilities')->nullable();
+            $table->timestamp('last_used_at')->nullable();
+            $table->timestamp('expires_at')->nullable();
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('personal_access_tokens');
+    }
+};
diff --git a/backend/database/migrations/2026_06_23_095329_add_role_to_users_table.php b/backend/database/migrations/2026_06_23_095329_add_role_to_users_table.php
new file mode 100644
index 0000000..885b491
--- /dev/null
+++ b/backend/database/migrations/2026_06_23_095329_add_role_to_users_table.php
@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->enum('role', ['admin', 'staff'])->default('staff')->after('password');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->dropColumn('role');
+        });
+    }
+};
diff --git a/backend/database/migrations/2026_06_23_095329_create_clients_table.php b/backend/database/migrations/2026_06_23_095329_create_clients_table.php
new file mode 100644
index 0000000..6475674
--- /dev/null
+++ b/backend/database/migrations/2026_06_23_095329_create_clients_table.php
@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('clients', function (Blueprint $table) {
+            $table->id();
+            $table->string('client_number')->unique();
+            $table->string('name');
+            $table->json('notes')->nullable();
+            $table->timestamps();
+
+            $table->fullText(['client_number', 'name']);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('clients');
+    }
+};
diff --git a/backend/database/migrations/2026_06_23_095330_create_history_entries_table.php b/backend/database/migrations/2026_06_23_095330_create_history_entries_table.php
new file mode 100644
index 0000000..545f09d
--- /dev/null
+++ b/backend/database/migrations/2026_06_23_095330_create_history_entries_table.php
@@ -0,0 +1,36 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('history_entries', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('client_id')->constrained()->cascadeOnDelete();
+            $table->enum('type', [
+                'phone_call', 'consultation', 'recommendation',
+                'instruction', 'remark', 'other',
+            ]);
+            $table->text('body');
+            $table->foreignId('author_id')->constrained('users');
+            $table->foreignId('updated_by')->nullable()->constrained('users')->nullOnDelete();
+            $table->softDeletes();
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('history_entries');
+    }
+};
diff --git a/backend/database/seeders/DatabaseSeeder.php b/backend/database/seeders/DatabaseSeeder.php
new file mode 100644
index 0000000..ee1a533
--- /dev/null
+++ b/backend/database/seeders/DatabaseSeeder.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace Database\Seeders;
+
+use App\Models\User;
+use App\Modules\Client\Models\Client;
+use App\Modules\History\Models\HistoryEntry;
+use Illuminate\Database\Seeder;
+
+class DatabaseSeeder extends Seeder
+{
+    public function run(): void
+    {
+        $admin = User::factory()->create([
+            'name' => 'Admin',
+            'email' => 'admin@example.com',
+            'password' => bcrypt('password'),
+            'role' => 'admin',
+        ]);
+
+        $clients = Client::factory(10)->create();
+
+        $clients->each(function (Client $client) use ($admin) {
+            HistoryEntry::factory(3)->create([
+                'client_id' => $client->id,
+                'author_id' => $admin->id,
+            ]);
+        });
+    }
+}