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+---
+title: >
+  UGE / L2 / Intro to relational databases / Python project prototype /
+  Money transfer platform specification
+
+author: Pacien TRAN-GIRARD
+date: 2021-07-24
+...
+
+
+# Project description
+
+The goal is to create a platform on which users can send money to each others.
+
+
+## Accounts
+
+Unauthenticated visitors can to either create a new account or log in into an
+existing one using their username and the matching password.
+
+### Balance
+
+Each account has a balance, which must remain non-negative at all times.
+
+### Transaction log
+
+Users can see a log of all of the financial transactions which involved them.
+
+
+## Operations
+
+### Deposit and withdrawal
+
+Users can deposit and withdraw an arbitrary amount of money to and from their
+account. Both operations are free.
+
+### Money transfer
+
+Users can send money between each others, referred to by their respective
+usernames.
+
+Each transaction between users has a fee of 10% of the transferred amount.
+