两个内部表格可以与相同的数据集相绑定，因为两个表格可以从相同的数据区域中获得数据，并使用相同的参数来筛选数据。
The two inner tables can bind to same data set because the two tables can get data from the same data fields and filter that data with the same parameters.
一个内部信息的例子可能是数据中心的日志文件，外部信息可能是一些抓取的网站或从数据目录下载的数据集。
An example of internal information might be log files from a data center, and external information might be several crawled websites or a dataset downloaded from a data catalog.
合并的两个数据集可以属于不同的数据集模型，所以它们的内部结构可能完全不同。
The two cubes that are merged can belong to different cube models, so they might have completely different internal structures.
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