Oracle NoSQL database is a completely different beast than Oracle RDBMS database. As you know, the “No” in NoSQL stands for (Not-Only) SQL database and as such there are a many NoSQL databases:

Oracle NoSQL falls into the Distributed key-value pair type. It consist of storage nodes which are hosting the data. Each collection (shard) is partitioned and each storage server will either be primary or replica to that partition.

Furthermore, the Oracle NoSQL has several APIs available to manage the data. So far I was able to use both: “Key-Value” pair API and the SQL API.