Datomic

Database as a value

Developed by Rich Hickey (of Clojure fame)

a schema-full no sql database

Entities - like tables

Attributes - like columns

Create with a schema

named with entity_name/attribute_name

scalar types - integer, boolean, float, symbol

enums

reference

cardinality of 1 or n

Distributed Querying

peers maintain own indexes

Serialized Transactions

using a transactor

Yoko Harada

Long time maintainer of Diametric (Datomic gem)

http://diametric-at-blendconf2013.herokuapp.com/slideshow

NuBank

Use Clojure / Datomic for bank

https://www.youtube.com/watch?v=7lm3K8zVOdY

Exploring Datomic's four superpowers

Diametric Sample code

https://github.com/boberetezeke/diametric-sample-code

Diametric Library (forked)

https://github.com/boberetezeke/diametric

branch: mymaster

https://github.com/relevance/diametric

forked from:

Fork adds

• Allows multiple databases per query
• Adds functions basis_t and history
• Adds logging
• Adds mixins
• Adds ability to group saves via transactions
• Adds ability to set attributes to nil (i.e. retract)