diff --git a/database/schema.sql b/database/schema.sql
new file mode 100644
index 0000000..846543c
--- /dev/null
+++ b/database/schema.sql
@@ -0,0 +1,106 @@
+CREATE TABLE IF NOT EXISTS users (
+    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    callsign VARCHAR(32) NOT NULL UNIQUE,
+    email VARCHAR(190) NOT NULL UNIQUE,
+    password_hash VARCHAR(255) NOT NULL,
+    role ENUM('user', 'moderator', 'admin') NOT NULL DEFAULT 'user',
+    status ENUM('new', 'callsign_pending', 'callsign_verified', 'payment_pending', 'active', 'expired', 'rejected', 'blocked') NOT NULL DEFAULT 'new',
+    access_expires_at DATETIME NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at DATETIME NULL ON UPDATE CURRENT_TIMESTAMP
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS callsign_checks (
+    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    user_id BIGINT UNSIGNED NOT NULL,
+    callsign VARCHAR(32) NOT NULL,
+    source VARCHAR(64) NOT NULL DEFAULT 'manual',
+    status ENUM('pending', 'verified', 'rejected', 'error') NOT NULL DEFAULT 'pending',
+    response_json JSON NULL,
+    checked_at DATETIME NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT fk_callsign_checks_user FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS dmr_ids (
+    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    user_id BIGINT UNSIGNED NOT NULL UNIQUE,
+    dmr_id INT UNSIGNED NOT NULL UNIQUE,
+    status ENUM('reserved', 'active', 'blocked') NOT NULL DEFAULT 'reserved',
+    assigned_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT fk_dmr_ids_user FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS tariffs (
+    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    name VARCHAR(120) NOT NULL,
+    price DECIMAL(10,2) NOT NULL DEFAULT 0.00,
+    currency CHAR(3) NOT NULL DEFAULT 'RUB',
+    duration_days INT UNSIGNED NOT NULL DEFAULT 30,
+    is_active TINYINT(1) NOT NULL DEFAULT 1,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS payments (
+    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    user_id BIGINT UNSIGNED NOT NULL,
+    tariff_id BIGINT UNSIGNED NULL,
+    amount DECIMAL(10,2) NOT NULL,
+    currency CHAR(3) NOT NULL DEFAULT 'RUB',
+    provider VARCHAR(64) NOT NULL DEFAULT 'manual',
+    provider_payment_id VARCHAR(190) NULL,
+    status ENUM('pending', 'paid', 'failed', 'cancelled', 'refunded') NOT NULL DEFAULT 'pending',
+    paid_at DATETIME NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT fk_payments_user FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
+    CONSTRAINT fk_payments_tariff FOREIGN KEY (tariff_id) REFERENCES tariffs(id) ON DELETE SET NULL
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS access_credentials (
+    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    user_id BIGINT UNSIGNED NOT NULL UNIQUE,
+    username VARCHAR(64) NOT NULL UNIQUE,
+    dmr_password_hash VARCHAR(255) NOT NULL,
+    dmr_password_hint VARCHAR(12) NULL,
+    is_enabled TINYINT(1) NOT NULL DEFAULT 0,
+    last_rotated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT fk_access_credentials_user FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS server_settings (
+    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    setting_key VARCHAR(120) NOT NULL UNIQUE,
+    setting_value TEXT NULL,
+    updated_at DATETIME NULL ON UPDATE CURRENT_TIMESTAMP,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS connection_logs (
+    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    user_id BIGINT UNSIGNED NULL,
+    callsign VARCHAR(32) NULL,
+    dmr_id INT UNSIGNED NULL,
+    ip_address VARCHAR(64) NULL,
+    event_type VARCHAR(64) NOT NULL,
+    message TEXT NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    INDEX idx_connection_logs_created_at (created_at),
+    CONSTRAINT fk_connection_logs_user FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE SET NULL
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS audit_logs (
+    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    actor_user_id BIGINT UNSIGNED NULL,
+    action VARCHAR(120) NOT NULL,
+    target_type VARCHAR(120) NULL,
+    target_id BIGINT UNSIGNED NULL,
+    payload_json JSON NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    INDEX idx_audit_logs_created_at (created_at),
+    CONSTRAINT fk_audit_logs_actor FOREIGN KEY (actor_user_id) REFERENCES users(id) ON DELETE SET NULL
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+INSERT INTO tariffs (name, price, currency, duration_days)
+VALUES ('Стартовый доступ 30 дней', 300.00, 'RUB', 30)
+ON DUPLICATE KEY UPDATE name = name;