conf/vldb/89 Danette Chimenti Ruben Gamboa Ravi Krishnamurthy Towards on Open Architecture for LDL. 195-203 1989 VLDB db/conf/vldb/vldb89.html#ChimentiGK89 db/conf/vldb/ChimentiGK89.html VLDB89/P195.PDF ... ... books/mg/CeriP84 conf/vldb/KrishnamurthyBZ86 conf/jcdkb/KrishnamurthyN88 conf/sigmod/KrishnamurthyRS88 conf/edbt/KrishnamurthyZ88 books/sp/Lloyd87 conf/sigmod/MaierW81 conf/pods/NaqviK88 books/cs/NaqviT89 conf/pods/RamakrishnanBK88 conf/sigmod/SelingerACLP79 journals/tods/Ullman85