Note on the Expected Size of a Join.

http://doi.acm.org/10.1145/984488.984491 db/journals/sigmod/Rosenthal81.html Arnon Rosenthal Note on the Expected Size of a Join. 19-25 sigmodR/11-4/P019.pdf 1981 11 SIGMOD Record 4 db/journals/sigmod/sigmod11.html#Rosenthal81