Datomic is a proprietary database management system. It is an operational DBMS, in other words, it allows updates in real time. Instead of assigning and overwriting values into named attributes, Datomic keeps track of all immutable facts over time, which sets Datomic apart because previous states can be accessed easily. Datomic is also a distributional DBMS, which provides horizontal read scalability. Therefore, Datomic is a good fit for storing a history of valuable records that requires operational flexibility and read scalability.
In addition, Datomic Cloud is built for AWS integration and is a quicker and easier way to access Datomic on AWS.
Relational Key/Value Entity-Attribute-Value
Datomic stores immutable facts as datoms over time. A datom follows the form of (entity, attribute, value, time).
Cognitect, Inc.
2012
Cassandra, CouchDB, DynamoDB, Infinispan, MySQL, Oracle NoSQL, Oracle RDBMS, PostgreSQL, Riak