Closed World Databases Opened Through Null Values.

conf/vldb/88 Georg Gottlob Roberto Zicari Closed World Databases Opened Through Null Values. 50-61 1988 VLDB db/conf/vldb/vldb88.html#GottlobZ88 db/conf/vldb/GottlobZ88.html VLDB88/P050.PDF conf/pods/AbiteboulB84 ... journals/tods/BancilhonS81 conf/adbt/Biskup79 journals/tods/Biskup83 journals/tods/Codd79 journals/sigmod/Codd86 journals/sigmod/Codd87 conf/sigmod/DadamKABEGLPW86 conf/vldb/FischerG85 ... journals/tods/GottlobPZ88 journals/tois/GutingZC89 conf/adbt/Imielinski82 conf/vldb/ImielinskiL81 journals/tse/KellerW85 conf/vldb/Lien79 journals/tods/Lipski79 books/cs/Maier83 conf/adbt/Reiter77 journals/jacm/Reiter86 ... ... conf/vldb/SchekP82 journals/is/SchekS86 journals/computer/SnodgrassA86 conf/sigmod/Vassiliou79 journals/tods/Wong82 ... journals/jcss/Zaniolo84