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How should I model conversion events?

For instance, if a sales opportunity goes from "stage: prospecting" to "stage: validating", should that be treated as a changing dimension, or a conversion event in the fact table?

Max

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This is commonly represented with an accumulating snapshot fact table or timestamped accumulating snapshot fact table. Accumulating snapshot tables model events in progress for business processes that involve a predefined series of steps. The timestamped.

You'll have a date key in the table that represents the date the opportunity hit each stage. If you need to reproduce what pipeline looked like on a given day or track the fact that an opportunity went into and out of a stage multiple times, you might need to consider the timestamped accumulating snapshot.

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