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by drcode 4666 days ago
In short, you can ask a datomic database stuff like "Show me all things that are different for customer X from the database today versus the database one year ago on September 14th at 9:32 AM" and it can answer those types of queries with high performance.

And no, the dataset does not need to fit in RAM.
2 comments
calibraxis 4666 days ago
You can also go forward in time, to a hypothetical future. (That is, you add data and get back a new DB value, which you can query against. But the DB's source isn't modified.) Can be useful in analytics which deal with what-if scenarios.
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MrBuddyCasino 4666 days ago
Thanks, that helped. They should be more clear on their website about that, I know Clojure a bit and some of the things about state, time and identity, and I still didn't get it.
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