Two Explanation Facilities for the Deductive Database Management System DeDEx.

C. Wieland Two Explanation Facilities for the Deductive Database Management System DeDEx. 189-203 1990 ER db/conf/er/er90.html#Wieland90 conf/er/90 er90/ER90-P189.pdf books/mk/minker88/AptBW88 books/sp/ClocksinM87 journals/csur/GallaireMN84 books/sp/Lloyd87 conf/btw/MartiWW89 books/mk/Minker88 ... ... journals/spe/RoweDMMST87 ... ... journals/ai/Swartout83 journals/siamcomp/Tarjan72 books/cs/Ullman88 books/mk/minker88/Gelder88 ... journals/ai/Weiner80 ... books/sp/Wirth82