Path: news.netfront.net!news.glorb.com!newsgate.cistron.nl!xs4all!transit2.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Date: Fri, 15 Feb 2008 13:50:38 +0100 From: mAsterdam Organization: Pakhuis User-Agent: Thunderbird 2.0.0.9 (Windows/20071031) MIME-Version: 1.0 Newsgroups: comp.object,comp.databases.theory Subject: Re: Mixing OO and DB References: <89b92dec-b710-4c24-9c8e-731de01fb49a@u10g2000prn.googlegroups.com> <16c6e7fb-9f81-432a-84ac-753b5e1b890d@i72g2000hsd.googlegroups.com> <9a728b15-140a-4b1f-a221-74bebf6bf66d@i12g2000prf.googlegroups.com> <47b4eada$0$85779$e4fe514c@news.xs4all.nl> <76e0604c-fcda-4594-8a5b-906741a8a1e0@62g2000hsn.googlegroups.com> In-Reply-To: <76e0604c-fcda-4594-8a5b-906741a8a1e0@62g2000hsn.googlegroups.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Lines: 26 Message-ID: <47b589c3$0$85796$e4fe514c@news.xs4all.nl> NNTP-Posting-Host: 82.92.225.151 X-Trace: 1203079619 news.xs4all.nl 85796 [::ffff:82.92.225.151]:48532 X-Complaints-To: abuse@xs4all.nl Xref: news.netfront.net comp.object:96812 comp.databases.theory:47720 Tegiri Nenashi wrote: > mAsterdam wrote: >> Marshall wrote: >>> Tegiri Nenashi wrote: >>>> The Galois duality between attributes and objects >>> Oh, shit. What does that mean? I have this intuition that >>> you've just said something that it's important that I learn about. >>> Marshall >>> PS. And I'm still meaning to follow up on the Galois connection >>> between syntax and semantics... need more Tarski. Mumble >>> mumble. Have to finish that axiomatic set theory book, then >>> need to read about model theory. Argh. >> Yes, V^H Nenashi, please elaborate for us mere mortals :-) > > I thought Marshall was joking. Anyway, don't take my word for it, > Galois connections are mentioned in about every FCA paper. He may have been. I wasn't. In the coming days I won't be posting much, I suspect :-) Thank you for these references: > Here is FCA home page > http://www.upriss.org.uk/fca/fca.html > and introductory article > http://www.upriss.org.uk/papers/arist.pdf > There is even free software to play with, e.g ConceptExplorer!