conf/vldb/81 Karen Chase Join Graphs and Acyclic Database Schemes VLDB81/P095.PDF 95-100 1981 VLDB db/conf/vldb/vldb81.html#Chase81 db/conf/vldb/Chase81.html books/aw/AhoHU74 conf/stoc/BeeriFMMUY81 journals/jacm/BeeriFMY83 journals/tods/FaginMU82 ... journals/tods/MaierU83 ... ... books/cs/Ullman80