conf/pods/87 Jeffrey D. Ullman Database Theory: Past and Future. 1-10 1987 PODS db/conf/pods/pods87.html#Ullman87 http://doi.acm.org/10.1145/28659.28660 db/conf/pods/Ullman87.html journals/anthology/cd1-3:PODS87/P001.PDF journals/anthology/dvd1:text/1-3/PODS87/P001.PDF conf/popl/AhoU79 ... journals/sigmod/Bancilhon86 conf/sigmod/BancilhonR86 journals/tods/BeeriB79 journals/tods/Bernstein76 journals/siamcomp/BernsteinG81 ... books/mg/CeriP84 journals/jcss/ChandraH80 ... journals/cacm/Codd70 journals/jacm/Paola69a journals/cacm/EswarranGLT76 journals/tods/Fagin77 journals/jacm/Fagin83 journals/tods/FaginMU82 ... ... ... conf/oopsla/KhoshafianC86 ... conf/sigmod/KuperV85 books/cs/Maier83 ... conf/oopsla/MaierSOP86 journals/tods/Mendelzon84 journals/jacm/Papadimitriou79b ... journals/tods/Sagiv83 conf/pods/Sagiv87 journals/jacm/SilberschatzK80 conf/focs/StearnsLR76 journals/tods/Ullman85 conf/slp/Gelder86 ...