They are very similiar to class diagrams which are used outside of academia. ----- Original Message ----- From: "Tim Gorman" <tim@xxxxxxxxxxxxx> To: <oracle-l@xxxxxxxxxxxxx> Sent: Saturday, February 07, 2004 2:55 PM Subject: Re: Academic ERDs vs. Professional ERDs > If it is not used outside of academia, then it is either ahead of its time > (due for general adoption) or of absolutely no practical use whatsoever. > > Given that decision-tree, how long have these concepts been around? I'm > sure the footnotes have dates... :-) > > > > > on 2/7/04 9:47 AM, Ryan at ryan.gaffuri@xxxxxxx wrote: > > > I'm taking academic database classes and last semester we covered academic > > ERDs. The material in the book discussed 'entity sets' and relationship sets. > > The relations between them seemed very similiar to relations in a class > > diagram. > > However, I when I look into Erwin and Designer the ERDs there seem to be > > closer to table models. Does anyone use the academic type of ERDs > > professionally? > > > > ---------------------------------------------------------------- > > Please see the official ORACLE-L FAQ: http://www.orafaq.com > > ---------------------------------------------------------------- > > To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx > > put 'unsubscribe' in the subject line. > > -- > > Archives are at //www.freelists.org/archives/oracle-l/ > > FAQ is at //www.freelists.org/help/fom-serve/cache/1.html > > ----------------------------------------------------------------- > > ---------------------------------------------------------------- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > ---------------------------------------------------------------- > To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx > put 'unsubscribe' in the subject line. > -- > Archives are at //www.freelists.org/archives/oracle-l/ > FAQ is at //www.freelists.org/help/fom-serve/cache/1.html > ----------------------------------------------------------------- > ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------