It helps in comparison of columns and helps identify relationship among source and target objects.

它有助于对列进行比较，有助于确定源对象和目标对象之间的关系。

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It helps in comparison of columns and helps identify relationship among source and target objects.

它有助于对列进行比较，有助于确定源对象和目标对象之间的关系。

youdao