Victor M. Markowitz Arie Shoshani Representing Extended Entity-Relationship Structures in Relational Databases: A Modular Approach. 423-464 1992 17 ACM Trans. Database Syst. 3 db/journals/tods/tods17.html#MarkowitzS92 http://doi.acm.org/10.1145/132271.132273 db/journals/tods/MarkowitzS92.html TODS17/P423.PDF conf/vldb/AtzeniC87 conf/pods/AtzeniP82 conf/icde/AtzeniP86 conf/er/Brady85 journals/jcss/CasanovaFP84 journals/tods/Chen76 journals/tods/Codd79 ... conf/pods/Hull84 journals/csur/HullK87 journals/tse/JajodiaNS83 ... conf/er/Lien79 journals/jacm/Lien82 books/cs/Maier83 journals/tse/MaierRS85 journals/acr/MaierRW86 journals/tods/MaierUV84 journals/tse/MarkowitzM90 conf/icde/Markowitz92 conf/icde/Markowitz91 ... conf/er/MarkowitzS89 journals/csur/TeoreyYF86 ... ...