SQL

SQL-based relational databases (sqlite3, Postgres, MySQL, etc.)

Currently, there commonly used techniques for storing persistent data are:

• SQL based databases, e.g. sqlite3, Postgres, MySQL
• NoSQL datastores, such as MongoDB, CouchDB, Aerospike, Cassandra, Couchbase, and Voldemort

This article (and series of subarticles) deals with SQL based databases, and how to access those from Java code.