On: Datomic: Can Simple be also Fast?

[vmind]

You can define functions inside the database and then use them inside a transaction [1] so that you can get atomic update, if that's the question. You can also mark attributes as noHistory [2] if you don't care about the past state.

[1] http://docs.datomic.com/database-functions.html

[2] http://docs.datomic.com/schema.html