Well, three chapters. The latest book I worked on is up at Apress. I only have three chapters in this one, backup, restore & performance monitoring & tuning. It’s written as an introductory book, targeted to help get people started as a DBA. I haven’t read the chapters from the other authors, but Rob Walters is a terrific writer & a great guy and Carmen Taglienti has a wonderful reputation, so I suspect their work will be everything you could ask for. Of course, it’s not real until you can get it on Amazon.