By definition, a data mart is a subset of a data warehouse designed for a specific group of users or a particular subject area.

根据定义，数据市场是数据仓库的一个子集，是专门针对特定的用户群或特定的主题领域设计的。

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Each data mart can tackle an identifiable business problem or subject area, making it possible to calculate ROI.

每个数据集市都可以处理可识别的业务问题或主题领域，从而可以计算roi。

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Describe the subject area of the data.

描述数据的主题领域。

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One way is to become conversant in the subject matter of data science consumers, perhaps even obtaining basic certification in the subject matter area of the consumer.

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