Definition of Upstream

Upstream: Upstream and Downstream are terms used in data science to describe the flow of data or what order events occur. Data is processed and becomes more refined as it moves through the various processes. Upstream is closer to the source. When discussing a specific process step, Downstream is a term that is used to signify something that will occur in a later step, and Upstream is used to signify something that occurred before the specific process step being discussed. For example: Sales Leads may be analyzed and updated so that they can be correctly assigned to a sales rep in a separate downstream process. Before the Sales Lead data was entered into the system it was scrubbed for duplicates in a separate upstream process.

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