SaaS Subscription Database ER Diagram

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The prompt behind this diagram

An ER diagram for a SaaS subscription database: accounts, users (N per account), plans, subscriptions with status lifecycle, invoices, invoice_items, payments, usage_events, feature_flags per plan. Show primary keys, foreign keys and 1-N / N-N relationships.

Paste your own description (or Terraform / docker-compose / SQL schema) into draft1 and get a diagram like this for your exact system.

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