000 00253nam a22000977a 4500
003 SGT
245 _aACM TRANSACTIONS ON DATA BASE SYSTEM
260 _aNEW YORK
_bASSOCIATION FOR COMPUTING MACHINERY (AUG TO DEC.)
_cFEP103
300 _aV.P.
942 _2ddc
_cBV
999 _c20186
_d20186