这就是某些策略在文章的后面才介绍的原因，像布局、组件、主题策略，这些都能被定义在设备树状图中的任何层次。

This is why certain policies described later in the article, such as layout, component, and theme policies, can be defined at any level of the hierarchy of the device tree.

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本文还将介绍组织布局并讨论最佳实践。

It also explains the organizational layout and discusses best practices.

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现在，让我们来介绍数据布局的一些最佳实践。

Now let's discuss some best practices of data layout.

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