D8LooP - Practise Data Engineering

Preparing your workspaceloading the brief, studio & canvas…

buyersellerlistingorder

SCENARIO

You've joined AdBoost, an ad platform. Conversions arrive as individual events; spend arrives from the networks already aggregated per campaign per channel per day — and they routinely restate a day's spend two or three days later. Marketing wants to compare campaigns on efficiency, not just volume.

your model must answer

01Conversions and revenue per campaign per day?
02ROAS — revenue divided by spend — per campaign per day, last week?
03Revenue by channel last week?

out of scopeMulti-touch attribution · audiences · creative · fraud · currency

This exercise’s brief could not be loaded.The guided questions and their model answers come from the review service. It looks like it is not reachable — start it with pnpm dev:api and reload.The canvas below still works, so you can model now and run the review once the service is up.

Build starts here

The brief becomes the left drawer. The canvas stays the build surface.Study is done above. Build the tables here, hit review to validate, then use follow-ups to defend the model.

Practice studio

Ctrl/Cmd + C copyCtrl/Cmd + V pasteCtrl/Cmd + Z undoDelete remove

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.

68%

You built the model in the Studio. Now defend it.Campaign efficiency

Design review

The reviewer reads your model.

Preparing your workspaceloading the brief, studio & canvas…

buyersellerlistingorder

SCENARIO

your model must answer

01Conversions and revenue per campaign per day?
02ROAS — revenue divided by spend — per campaign per day, last week?
03Revenue by channel last week?

out of scopeMulti-touch attribution · audiences · creative · fraud · currency

Build starts here

The brief becomes the left drawer. The canvas stays the build surface.Study is done above. Build the tables here, hit review to validate, then use follow-ups to defend the model.

Practice studio

Ctrl/Cmd + C copyCtrl/Cmd + V pasteCtrl/Cmd + Z undoDelete remove

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.

68%

You built the model in the Studio. Now defend it.Campaign efficiency

Design review