本小节将介绍两层的仓库建模方法，该方法最适合于自底向上的实现。
This section introduces the two-tiered warehouse modeling approach, which is the best fit for a bottom-up implementation.
幻灯片接着详细讨论了SCA的两种组合方式：自顶向下和自底向上、通过配置和组件实现重用实现、绑定和策略。
The presentation then goes into details on top down and bottom up composition approaches with SCA, implementation reuse through configuration and component implementation, binding and policies.
自底向上的实现包含数据仓库的计划和设计，无需等待安置好更大业务范围的数据仓库设计。
A bottom-up implementation involves the planning and design of a data warehouse without waiting for a more business-wide data warehouse design to be put in place.
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