[lonelappde]

Send 4 API calls to update the 4 databases.

Name the bank so we know not patronize patronize it.

[derision]

Hey guys check it out! This guy just solved distributed databases.

[pjc50]

This works until one of the DBs is down, or someone queries two if them at the same time. Without rollback you get the TSB fiasco.

[cabaalis]

Not sure why this would turn you off to an organization as this is a very common problem.

My money is on your suggestion being what most organizations actually do, though perhaps with a workflow process to manage it.

Legacy systems are hard.