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databases/transactions-why-a-money-transfer-must-save-both-changes-or-neither.md
Transactions: why a money transfer must save both changes or neither
Sending £50 between two accounts takes two changes to a database. If the power fails between them, the money vanishes. A transaction groups…
databases/database-transactions-why-moving-money-is-all-or-nothing.md
Database transactions: why moving money is all or nothing
Paying someone is really two changes in a database: take money from one account, add it to another. If the power dies between them, money…