User:Jonathan Leffler

Long time user and developer of the Informix SQL DBMS running on Unix systems. Reader of many books by C J Date; I still have a copy of Introduction to Database Systems Volume II, for example. These days, not so active in database development — and somewhat tangentially using databases (the system I've been moved to uses a hodge-podge of 'NoSQL' DBMS, etc.) Sometimes, you don't get a choice in these matters.