Loadingone moment…
You've joined Subbox. Support needs a user's current plan in one fast query; finance needs MRR by plan by month. The difficulty is the middle of the month: somebody upgrades on the 14th and is charged a prorated amount. Annual plans are paid up front, and finance recognises them across twelve months.
out of scopeTax · dunning · discounts · usage charges · refunds
pnpm dev:api and reload.The canvas below still works, so you can model now and run the review once the service is up.Practice studio
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.
This scenario runs a full workspace — editor, canvas and results side by side. It needs a laptop or desktop to be usable. Open this page on a bigger screen to start building.