Update transactions.md

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Krasimir Angelov
2021-09-23 15:07:13 +02:00
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@@ -114,3 +114,5 @@ The solution is that we count on the database clients to correctly report when a
## Atomicity
The transactions serve two goals. First they make it possible to isolate readers from seeing unfinished changes from writers. The second is to ensure atomicity. A database change should be either completely done or not done at all. The use of transient revisions ensures the isolation but the atomicity is only partly taken care of.