6. Product analytics identity

Design the identity model behind users, anonymous visitors, devices, sessions, and product events.

Constraints

Support identity stitching without assuming every event arrives with a known user id

Brainstorming scratchpad

Practice studio

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Start with the data model, then layer system context

Use entities and relationships for the real ERD. Add notes, containers, or curated cloud shapes only when they sharpen the story you are architecting.

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AI review panel

Validate the ERD objects to inspect keys, names, and cardinality coverage.