The new JDB addon is an efficient relational database written in J, see: http://www.jsoftware.com/jwiki/JDB .
Data is stored with columns in mapped files, each column being a native J datatype. The query language is a SQL-like syntax supporting standard relational concepts, including unique keys and natural joins. Journaled updates provide atomicity and transactional integrity, while a client/server interface allows concurrent access. Several databases are included with the addon for testing purposes. This first release is intended as a basis for further work, and feedback would be much appreciated. Please send items for further discussion to the programming forum, or privately to Oleg and myself. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
