Firebase Console의 실시간 데이터베이스 섹션으로 이동합니다.
기존 Firebase 프로젝트를 선택하라는 메시지가 표시됩니다.
데이터베이스 만들기 워크플로를 따릅니다.
보안 규칙의 시작 모드를 선택합니다.
테스트 모드
모바일과 웹 클라이언트 라이브러리를 시작할 때 유용하지만 모든 사용자가 데이터를 읽고 덮어쓸 수 있습니다. 테스트 완료 후 Firebase 실시간 데이터베이스 규칙 이해 섹션을 검토해야 합니다.
시작하려면 테스트 모드를 선택합니다.
잠금 모드
모바일과 웹 클라이언트의 모든 읽기와 쓰기를 거부합니다.
인증된 애플리케이션 서버에서는 사용자의 데이터베이스에 계속 액세스할 수 있습니다.
데이터베이스의 리전을 선택합니다. 선택한 리전에 따라 데이터베이스 네임스페이스는 <databaseName>.firebaseio.com 또는 <databaseName>.<region>.firebasedatabase.app 형식이 됩니다. 자세한 내용은 프로젝트 위치 선택을 참조하세요.
[null,null,["최종 업데이트: 2025-08-04(UTC)"],[],[],null,["# Get Started with Realtime Database\n\n\u003cbr /\u003e\n\nPrerequisites\n-------------\n\n1. [Install `firebase_core`](/docs/flutter/setup) and add the initialization code to your app if you haven't already.\n2. Add your app to your Firebase project in the [Firebase console](https://console.firebase.google.com/).\n\nCreate a Database\n-----------------\n\n1. Navigate to the **Realtime Database** section of the [Firebase console](https://console.firebase.google.com/project/_/database).\n You'll be prompted to select an existing Firebase project.\n Follow the database creation workflow.\n\n2. Select a starting mode for your security rules:\n\n **Test mode**\n\n Good for getting started with the mobile and web client libraries,\n but allows anyone to read and overwrite your data. After testing, **make\n sure to review the [Understand Firebase Realtime Database Rules](/docs/database/security)\n section.**\n | **Note:** If you create a database in Test mode and make no changes to the default world-readable and world-writeable security rules within a trial period, you will be alerted by email, then your database rules will deny all requests. Note the expiration date during the Firebase console setup flow.\n\n To get started, select testmode.\n\n **Locked mode**\n\n Denies all reads and writes from mobile and web clients.\n Your authenticated application servers can still access your database.\n3. Choose a region for the database. Depending on your choice of region,\n the database namespace will be of the form `\u003cdatabaseName\u003e.firebaseio.com` or\n `\u003cdatabaseName\u003e.\u003cregion\u003e.firebasedatabase.app`. For more information, see\n [select locations for your project](/docs/projects/locations#rtdb-locations).\n\n4. Click **Done**.\n\nWhen you enable Realtime Database, it also enables the API in the\n[Cloud API Manager](https://console.cloud.google.com/projectselector/apis/api/firebasedatabase.googleapis.com/overview).\n\nAdd Firebase Realtime Database to your app\n------------------------------------------\n\n1. From the root of your Flutter project, run the following command to install the plugin:\n\n flutter pub add firebase_database\n\n2. Once complete, rebuild your Flutter application:\n\n flutter run\n\nConfigure database rules\n------------------------\n\nThe Realtime Database provides a declarative rules language that allows you to\ndefine how your data should be structured, how it should be indexed, and when\nyour data can be read from and written to.\n| **Note:** By default, read and write access to your database is restricted so only authenticated users can read or write data. To get started without setting up Firebase Authentication, you can [configure your rules for public access](/docs/rules/basics#default_rules_locked_mode). This does make your database open to anyone, even people not using your app, so be sure to restrict your database again when you set up authentication.\n\nInitialize the Firebase Realtime Database package\n-------------------------------------------------\n\nTo start using the Realtime Database package within your project, import it at\nthe top of your project files: \n\n import 'package:firebase_database/firebase_database.dart';\n\nTo use the default Database instance, call the `instance`\ngetter on `FirebaseDatabase`: \n\n FirebaseDatabase database = FirebaseDatabase.instance;\n\nIf you'd like to use it with a secondary Firebase App, use the static `instanceFor` method: \n\n FirebaseApp secondaryApp = Firebase.app('SecondaryApp');\n FirebaseDatabase database = FirebaseDatabase.instanceFor(app: secondaryApp);\n\nIf you'd like to use a different RTDB instance on the same project, you can pass in a `databaseUrl` using\nthe static `instanceFor` method: \n\n final firebaseApp = Firebase.app();\n final rtdb = FirebaseDatabase.instanceFor(app: firebaseApp, databaseURL: 'https://your-realtime-database-url.firebaseio.com/');\n\nNext Steps\n----------\n\n- Learn how to [structure data](/docs/database/flutter/structure-data) for Realtime Database.\n\n- [Scale your data across multiple database instances.](/docs/database/usage/sharding)\n\n- [Read and write data.](/docs/database/flutter/read-and-write)\n\n- [View your database in the\n Firebase console.](//console.firebase.google.com/project/_/database/data)"]]