After browsing details about the novels, the user decides to add one of the novels to the shopping cart. This action causes the application to make a database call to update the shopping cart.

• 在浏览了的小说的详细信息后，用户可能会把这个小说加到购物车中。此动作会驱动应用程序对数据库执行一个函数调用，以更新用户的购物车。