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It might help to imagine this as an implementation of a persistent data structure. https://en.wikipedia.org/wiki/Persistent_data_structure https://en.wikipedia

It might help to imagine this as an implementation of a persistent data structure. https://en.wikipedia.org/wiki/Persistent_data_structure https://en.wikipedia.org/wiki/Persistent_data_structure The persistence allows previous states of the data structure to be used in still ongoing, "older" transactions.

dominotw 7y ago
datomic is built on this concept ?
- ysleepy 7y ago
  pretty much. Datomic is roughly what you get if you do MVCC, but never garbage-collect old entries and support querying at a chosen version/timestamp.