除了登录页面，Victor还会为其他的用例创建书籍搜索页面以及支付页面(查看接下来的三个范例)。
Besides the sign-in page, Victor also creates book search pages and payment pages for other use cases (see the three examples that follow).
在上面举例说明的HDBMS中，找到答案的唯一方法是搜索每个书籍叶节点，而这样做的成本极其高。
In an HDBMS like the one illustrated above, the only way to discover this would be an extremely costly search of every book leaf node.
这种方法有一个例子，那就是利用图书馆搜索寻找书籍或其他材料，但当前的图书馆里没有相关的项时。
An example of this approach is a library search for books or other materials, when the item of interest may not be available from the current library.
应用推荐