Most commonly you’ll be working with the latest version of an entity. If you specify an older state of the database (often done via a timestamp), then you can see the entity as it was. Alternately you can query the history of changes to attributes and assemble your own notion of the versions.

@U0CV48L87 thank you! So, by default, a query in datomic returns the latest version of the datom? Right now i seem to be getting all versions of it so i wonder if i'm doing something wrong in adding datoms or whether i should adjust the query code

If you want to provide a link to example code demonstrating your efforts we can help you understand the responses you are seeing.

Yeah, I think it's easiest to look at an example @U033V0AJFU4 so feel free to share. But in Datomic you pass a DB value to the query. You will get results in query from the DB value you are passing, in Datomic a https://docs.datomic.com/cloud/whatis/data-model.html#database is a set of datoms. A point-in-time immutable value that will never change. If you want to see all history we have the https://docs.datomic.com/client-api/datomic.client.api.html#var-historyhttps://docs.datomic.com/on-prem/clojure/index.html#datomic.api/history(see also: https://docs.datomic.com/cloud/tutorial/history.html#history-query). This is true for both on-prem and Cloud.