| Subject | English | Portuguese |
| comp., MS, Braz. | optimistic concurrency | simultaneidade otimista (A type of locking in which the data page or row containing one or more records (rows) -- (including the data being edited) -- is unavailable to other users only while the data is being updated, but is available between the Edit and Update operations) |
| IT, dat.proc. | optimistic duration | duração otimista |
| comp., MS, Braz. | optimistic duration | duração otimista (The best-case possibility for the total span of active working time expected for a task, that is, the amount of time from the optimistic start to optimistic finish of a task) |
| IMF. | optimistic scenario | melhor cenário |
| IMF. | optimistic scenario | cenário baseado nas políticas mais favoráveis |
| IMF. | optimistic scenario | cenário otimista |
| IMF. | optimistic scenario | cenário mais favorável |