How should you properly organize your sqflite database access code using a dedicated database helper class, keeping your genuine SQL related logic properly and cleanly separated from the rest of your app's own business logic?

A dedicated database helper class typically properly encapsulates the entire database's own connection lifecycle, including genuinely opening it once and correctly reusing that exact same single connection throughout the entire app's own lifetime, along with providing genuinely clear, well named methods for each of your specific application's own required data operations, such as insertOrder or getOrdersByCustomer, keeping every single raw SQL query properly contained within this one single dedicated class rather than scattered messily throughout dozens of separate individual widgets, meaningfully improving your overall codebase's genuine maintainability.

class DatabaseHelper {
  static Database? _database;

  Future<Database> get database async {
    _database ??= await openDatabase('app.db', version: 1, onCreate: _createTables);
    return _database!;
  }
}