Path: newssvr20.news.prodigy.com!newsmst01a.news.prodigy.com!prodigy.com!news.glorb.com!border1.nntp.ash.giganews.com!nntp.giganews.com!local1.nntp.ash.giganews.com!nntp.comcast.com!news.comcast.com.POSTED!not-for-mail NNTP-Posting-Date: Tue, 04 May 2004 21:52:52 -0500 Reply-To: "Laconic2" From: "Laconic2" Newsgroups: comp.databases.theory References: Subject: Re: Peter Chen and Charles Bachman Date: Tue, 4 May 2004 22:53:51 -0400 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1409 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Message-ID: <47mdnZBQ75-ZygXdRVn-jw@comcast.com> Lines: 22 NNTP-Posting-Host: 24.60.68.134 X-Trace: sv3-Y3AfX5r2BREMrFdGtNkW7PDsqt3Hc5wX5Fq0FEfyXb3LGDXtNzeqKMNZF/81hTVcFBSGpkO4fSz7v2g!Y1L7IMES3F0xfyWb6Tr0V2z8VuolIFkF3uf+7lhBBaPJdmOktgh95PhNYPqw X-Complaints-To: abuse@comcast.net X-DMCA-Complaints-To: dmca@comcast.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:26203 "Leandro Guimarães Faria Corsetti Dutra" wrote in message > A model must include all aspects of the database, or it will > be only a draft. That's precisely what a model is NOT! A model highlights certain features of the thing modeled precisely because it omits some of the detail. If you were building a 12 foot model of the titanic, you wouldn't expect all the toilets to flush! And it's the smae way in modeling SW or databases, or anything. The model isn't the thing itself, and it doesn't model everything about it. Otherwise the model would be a s hard to build as the thing it modeled.