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I recently learned about Promises, which seemed similar to SQL Transactions.
Transactions are all or nothing
Promises are sequential callbacks
Are they different implementations of the same concept to handle asynchronous events?
Promises are a general concept dealing with asynchronousness. Transactions are a means to guarantee atomicity when updating multiple records.
They might appear together in some library but they are not related. You could see them together if you have a transactional database that has an asynchronous API.