So Ingres is now open source, and, in the spirit of newer companies, the CTO, Dave Dargo has a blog. Out of the gate, Dave writes long, interesting entries that touch on both technology and the business impact of technology. This reminds me of the blog written by Dave Kellogg, CEO of MarkLogic. While I enjoy all kinds of blogs recently, there is something of real value in what the two Daves are doing here–taking technical subjects, putting some business perspective around them, and writing about them at some length.