D8LooP - Practise Data Engineering

Preparing your workspaceloading the brief, studio & canvas…

buyersellerlistingorder

SCENARIO

You've joined EnergyTrade. Trades are booked in several currencies and reported in a base currency using the rate as of the trade date — and rates are published daily, then sometimes revised later. A revision must not change historical reports unless they are explicitly restated.

your model must answer

01The base-currency value of a trade using the rate as of the trade date?
02The rate that was used for a trade on a past report date, and whether it was later revised?
03By month and currency, total traded volume, base-currency value, and the impact of rate revisions on reported P&L?

out of scopePosition keeping · settlement · collateral · delivery · hedge accounting

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.Trades, currencies, and rates as of trade date

Design review

The reviewer reads your model.

Preparing your workspaceloading the brief, studio & canvas…

buyersellerlistingorder

SCENARIO

your model must answer

01The base-currency value of a trade using the rate as of the trade date?
02The rate that was used for a trade on a past report date, and whether it was later revised?
03By month and currency, total traded volume, base-currency value, and the impact of rate revisions on reported P&L?

out of scopePosition keeping · settlement · collateral · delivery · hedge accounting

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.Trades, currencies, and rates as of trade date

Design review