D8LooP - Practise Data Engineering

Preparing your workspaceloading the brief, studio & canvas…

buyersellerlistingorder

SCENARIO

You've joined StockCo. The quarterly count rarely matches the system, and finance needs the difference *explained*, not just corrected. And because units are reserved before they physically leave, “how many do we have” and “how many can we still promise” are different numbers — the sales team has been quoting the wrong one.

your model must answer

01How many units can still be promised at a given warehouse?
02Which warehouses could fulfil an order for 50 units?
03Receive 10 units, in a way that later explains why the number changed?

out of scopePurchasing · costing · batch tracking · picking routes

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.Stock you can explain

Design review

The reviewer reads your model.

Preparing your workspaceloading the brief, studio & canvas…

buyersellerlistingorder

SCENARIO

your model must answer

01How many units can still be promised at a given warehouse?
02Which warehouses could fulfil an order for 50 units?
03Receive 10 units, in a way that later explains why the number changed?

out of scopePurchasing · costing · batch tracking · picking routes

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.Stock you can explain

Design review