private IDatabase CreateDatabase()
{
IDatabase database = new InMemoryDatabase();
database.Connect();
Console.WriteLine("Creating a database...");
User user = new User(1, "*****@*****.**", "secret");
user.IncreaseFunds(1000);
database.Users.Add(user);
database.Products.Add(new Product(1, "Ball", 50));
database.Products.Add(new Product(2, "Hammer", 200));
database.Products.Add(new Product(3, "Notebook", 3000));
database.Products.Add(new Product(4, "Monitor", 550));
database.Products.Add(new Product(5, "Bike", 700));
return(database);
}