There are two existing entities in the Real-time Customer Profile store: one profile record and one event.
Both the event schema and profile schema have "email" as the primary identity. The _id is used to identify unique events.
Later, a data engineer ingests one additional profile fragment and another event:
Profile: ("email": "john@example.com*. "favBrand': "Adobe")
Event: {''_id": '5000". "email": "john@example.com". "purchase": "Photoshop 2021")
A)
B)
C)
D)
This will allow you to import both historical data and recurrent deltas without creating multiple dataflows.
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