NoSQL Tutorial: What is, Types of NoSQL Databases & Example
GitHub - lykmapipo/nitrite-database: Java embedded nosql document store
GitHub - GerHobbelt/hamsterdb: hamsterdb is a very fast lightweight embedded NoSQL database engine with support for transactions, database cursors, in-memory databases and remote client/server scenarios.
Relational vs. Non-Relational Databases: Features and Benefits
NoSQL Options for Java Developers | Okta Developer