... forever.Flaws of TranslationRegrettably, this approach is ßawedin two fundamental ways. First, re-lational databases are less standardizedthan they appear. Commercial relation-al database systems ... tables in a relational database can-not transparently show structure. Thatis, the database could not immediatelymake it clear that a corporation con-sisted of one headquarters, Þve nation-al ... NASAJULY 18, 1994JULY 23, 1994JULY 30, 1994AUGUST 24, 1994Copyright 1994 Scientific American, Inc. A planet, a star and a galaxy may not look much alike. Yet each ro-tates and has a magnetic...