Ruby on Rails

Imagine a rails app that has two versions that developers need to support: 1.0 and 2.0. There are 2 database schemas: app-1, app-2.

After fixing a bunch of very important bugs in production (1.0), some junior developer named Bob switches the branch to 2.0 to implement a few features but somehow gets his app connected to the schema app-1 and does rake db:migrate

As I understand, in that case the app-1 schema will be migrated to 2.0. Considering a fact that migrations are not always reversible, Bob is in trouble and instead doing useful work, has to restore the db schema.

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