Originally posted by REG
Strictly speaking, it doesn't make that book canon any more than an episode of Star Trek: The Animated Series that showed Spock's childhood.
The only elements from the book that are canon are those mentioned/displayed on the TV show, nothing more.
Er...which book(s) REG? The Jeri Taylor books (which are considered canon), or the DS9 books by S.D. Perry (which, as far as I know, never have been declared canon but I wish they were)?
About the Jeri Taylor books...the only reason they were ever considered canon is because she had the power to say they were officially canon. As far as I know, the reason she made this decision was because the novels specifically dealt with official back story for the Voyager characters. Since she was, at the time, executive producer, I guess she can do that. It just felt dodgey to me since they happened to be penned by her...But this has long been the notable exception about non TV/Movie material.
About the DS9 books, all I said was I'd like to think that they were canon. Didn't say they actually were.
Strictly Speaking
"When you meet the Buddha, kill the Buddha."