Path: newssvr20.news.prodigy.com!newsmst01.news.prodigy.com!prodigy.com!rip!chi1.webusenet.com!news.webusenet.com!cyclone1.gnilink.net!small1.nntp.aus1.giganews.com!border1.nntp.aus1.giganews.com!intern1.nntp.aus1.giganews.com!nntp.giganews.com!nntp.golden.net!news.golden.net.POSTED!not-for-mail NNTP-Posting-Date: Wed, 19 Nov 2003 17:21:51 -0600 From: "Bob Badour" Newsgroups: comp.databases.theory References: Subject: Re: What is a Relationship !? Date: Wed, 19 Nov 2003 18:21:00 -0500 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1106 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Message-ID: Lines: 22 NNTP-Posting-Host: 207.35.145.161 X-Trace: sv3-r6Fyo35lRmRbCf1OGgI0xH9jte/ZqScaMJFFRCHpibj13sVmtJ9cujcVuQ5gmmh/7CLO/LuKSG6TuDY!Wi7fZdyNgH0T0I9J0bcY+Geqhbd+b0+Wssyu80ufDgQ04jGRMv8mM4UaHdPFRpCDoE3Jq0npjQ== X-Complaints-To: abuse@golden.net X-DMCA-Complaints-To: abuse@golden.net X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.1 Xref: newssvr20.news.prodigy.com comp.databases.theory:22776 "ranger" wrote in message news:d6cdf6f8.0311191432.58dabe3c@posting.google.com... > Hello there, > > I feel like most of the papers I have read about E-R seem to be avoiding > really dealing with the questions in particular relationships > what to they mean a relationship is the association of entities ??? > > Is a relationship the fact that they are related e.g. book on a shelf > meaning that the place of a book is on the shelf > i.e. something that he is like the height of a man ??? > > Or is a relationship something by itself that is the relationship > e.g. component in recipe meaning a physical something that is > the same as the component and is in the recipe ??? > > Please help ! the words are starting to lose their meanings. The distinction between an entity and a relationship is arbitrary. The relational model represents either as a relation.