This containment hierarchy doesn't exist in every business domain context.
该容器层次结构并不存在于每个业务域上下文中。
To appear onscreen, every GUI component must be part of a containment hierarchy.
GUI组件需要在屏幕上显示，必须是控制层次的一部份。
A containment hierarchy is a tree of components that has a top-level container as its root. We'll show you one in a bit.
一个控制层次是一个拥有一个顶层容器作为它的根的树组件。
A containment hierarchy allows the access of all child elements from a parent very easily, for instance, access to all orders associated with a specific customer.
容器层次结构允许您毫不费力地访问父元素中的所有子元素，例如，允许访问与某一特定客户相关的所有订单。
You will see how the XML models the simple containment hierarchy where a single company element contains a departments element, which in turn contains three employees elements.
您将看到XML建模简单包容层次结构的方法，在此结构中，一个company元素包含一个departments 元素，departments 元素又包含3 个employees元素。
You will see how the XML models the simple containment hierarchy where a single company element contains a departments element, which in turn contains three employees elements.
您将看到XML建模简单包容层次结构的方法，在此结构中，一个company元素包含一个departments 元素，departments 元素又包含3 个employees元素。
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