Toward Logical Data Independence: A Relational Query Language Without Relations.

conf/sigmod/82 David Maier David Rozenshtein Sharon C. Salveter Jacob Stein David Scott Warren Toward Logical Data Independence: A Relational Query Language Without Relations. 51-60 1982 SIGMOD Conference db/conf/sigmod/sigmod82.html#MaierRSSW82 SIGMOD82/P051.PDF http://doi.acm.org/10.1145/582353.582362 db/conf/sigmod/MaierRSSW82.html ... journals/cacm/Codd70 journals/tods/FaginMU82 conf/vldb/Goldstein81 journals/tods/KorthKFGU84 ... journals/tods/MaierU83 conf/sigmod/MaierW82 ... journals/tods/StonebrakerWKH76 journals/ibmsj/Zloof77