I understand that this is a collection of essays, not the real book. But the structure of the this collection is so far from being great.
For some reason they decided to keep iterating though Stonebraker's main milestones from different perspectives.
From the first chapter you get the idea of man's life progression: ingress, postgress, aurora, c-store, h-store, tamer.
But in each section of the book they would keep repeating through this progression. So instead of getting full dump of knowledge about c-store (and vertica) in one section, you'll get just pieces of it.
And because essays are written by different people, they essentially have to keep repeating same intro in the beginning of each essay: what is postgres, why it's important, etc. It's such bizarre structure.
At the end the book presents real whitepapers from Michael, but in reverse chronological order, for some reason.
Why?
My advice would be: read the first chapter to get basic orientation, then go the section with whitepapers, read whitepapers in reverse order (that would make it chronological), maybe read the interview (part 3) and be done with the book honestly. The rest of it is just some random anecdotes and bits of memories of different people.
I enjoy reading biographies every now and then, but it has to be properly structured, which is not the case with this book.