I never read Fleming's "James Bond" books. Are the movies true to the books Bond character or not?

Found it:

The encyclopedia mentioned is the same one I can’t find at the moment to confirm Fleming’s opinion of David Niven, though in fairness, it might only be Gould’s opinion of Fleming’s opinion of Niven.

Hah…“Bryan Ekers, Montreal…” I was so young. Anyway, novel-Bond was ordering shaken martinis as early as “Casino Royale.”