Modeling Abstraction Layer 建模抽象层 ; 模型抽象层
As I mentioned in the Part 1, abstraction and modeling are two key skills.
正如我在第1部分提到的，抽象和建模是两项关键技能。
MDSD formalizes this idea of abstraction through the use of different levels of modeling and decomposition within a system.
MDSD通过在一个系统中不同的建模和分解层级的使用，将这样一个抽象的想法形式化。
Ensure that all use case goals are on the same level, and that all goals are at the level of abstraction for business modeling.
确保所有用例目标都在相同的层次上，并且对于业务建模来说所有目标都在抽象层上。
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