How to Create, Edit dan Delete Database With Flutter
Flutter provides various plugins to make it easy for you to work with databases, one of which is the `sqflite` plugin.


Flutter is a mobile app framework that allows you to build native apps for Android and iOS with a single codebase. Flutter provides various plugins to make it easy for you to work with databases, one of which is the `sqflite` plugin.

Creating a Database

Here is an example of how to create a database with the `sqflite` plugin:

import 'package:sqflite/sqflite.dart';

Future<void> main() async {
  // Get the path to the database
  final String databasePath = await getDatabasesPath();
  final String path = join(databasePath, 'my_database.db');

  // Open the database
  Database database = await openDatabase(
    path,
    version: 1,
    onCreate: (Database db, int version) async {
      // Execute a query to create a table
      await db.execute('''
        CREATE TABLE users (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          name TEXT NOT NULL,
          age INTEGER NOT NULL
        )
      ''');
    },
  );
}

The code above will create a new database named `my_database.db` in the app's default database location. This database has one table named `users` with three columns: `id`, `name`, and `age`.

Adding Data

Here is an example of how to add data to the `users` table:

Future<void> addUser(String name, int age) async {
  // Open the database
  Database database = await openDatabase('my_database.db');

  // Execute a query to insert data
  await database.insert(
    'users',
    {
      'name': name,
      'age': age,
    },
  );
}

The code above will insert new data into the `users` table with the given name and age.

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Retrieving Data

Here is an example of how to retrieve data from the `users` table:

Future<List<Map<String, dynamic>>> getAllUsers() async {
  // Open the database
  Database database = await openDatabase('my_database.db');

  // Execute a query to get all data
  final List<Map<String, dynamic>> results = await database.query('users');

  return results;
}

The code above will retrieve all data from the `users` table and return it as a list of maps.

Editing Data

Here is an example of how to edit data in the `users` table:

Future<void> updateUser(int id, String name, int age) async {
  // Open the database
  Database database = await openDatabase('my_database.db');

  // Execute a query to update data
  await database.update(
    'users',
    {
      'name': name,
      'age': age,
    },
    where: 'id = ?',
    whereArgs: [id],
  );
}

The code above will update the data in the `users` table with the given name and age for the user with the given ID.

Deleting Data

Here is an example of how to delete data from the `users` table:

Future<void> deleteUser(int id) async {
  // Open the database
  Database database = await openDatabase('my_database.db');

  // Execute a query to delete data
  await database.delete(
    'users',
    where: 'id = ?',
    whereArgs: [id],
  );
}

The code above will delete data from the `users` table with the given ID.

Flutter provides various plugins to make it easy for you to work with databases. The `sqflite` plugin is one of the popular and easy-to-use plugins. You can use this plugin to create, delete, and edit databases easily.

Note :

* Make sure you have installed the `sqflite` plugin in your project.
* You can find the complete documentation for the `sqflite` plugin at [https://pub.dev/documentation/sqflite/latest/sqflite/sqflite-library.html](https://pub.dev/documentation/sqflite/latest/sqflite/sqflite-library.html).

Complete Example

Here is a complete example of how to create, delete, and edit a database with Flutter:

import 'package:flutter/material.dart';
import 'package:sqflite/

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