RDA

Please excuse my possible ignorance.

Probably I've missed something, but :  I've been seeing in 
quite a few places -- even in official places, even e.g. in an 
IFLA official place, for example -- the term "Resource 
Discovery and Access" given as the proper full expression 
forwhat we call "RDA".

Is this just an  ( understandable ? )  error/misapprehension 
-- or is there more to it than that ?

 - Laval Hunsucker
   Breukelen, Nederland