Now, one way of representing the evolution of languages, showing the way languages are related to each other, is with the family tree model.
现在，描述语言的演化、展示语言之间的相互关系的一种方法，是用系谱图模型。
As with the other examples shown in this document, the report should contain the required business keys as well as a date field, if required, to link to the related dimensions in the model.
与本文所介绍的其他例子一样，这个报告应该包含所需要的业务键及日期域(如果需要)，以便链接到模型中相关的维度上。
Note: When using a logical model, by default, all fragments are checked out with the model (or related fragment).
注意：默认条件下，在您使用逻辑模型时，所有的片段都会随模型而得到检出（或者相关的片段）。
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