From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: 103376,ee0dc912649d50d4 X-Google-Attributes: gid103376,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news1.google.com!newsread.com!newsprint.newsread.com!news.glorb.com!newsfeed00.sul.t-online.de!t-online.de!news-lei1.dfn.de!news-ham1.dfn.de!news.uni-hamburg.de!cs.tu-berlin.de!uni-duisburg.de!not-for-mail From: Georg Bauhaus Newsgroups: comp.lang.ada Subject: Re: Ada DB bindings and APQ Date: Tue, 14 Dec 2004 21:06:56 +0000 (UTC) Organization: GMUGHDU Message-ID: References: <1km3c584awura$.y7djkir1ozya$.dlg@40tude.net> NNTP-Posting-Host: l1-hrz.uni-duisburg.de X-Trace: a1-hrz.uni-duisburg.de 1103058416 29424 134.91.1.34 (14 Dec 2004 21:06:56 GMT) X-Complaints-To: usenet@news.uni-duisburg.de NNTP-Posting-Date: Tue, 14 Dec 2004 21:06:56 +0000 (UTC) User-Agent: tin/1.5.8-20010221 ("Blue Water") (UNIX) (HP-UX/B.11.00 (9000/800)) Xref: g2news1.google.com comp.lang.ada:6948 Date: 2004-12-14T21:06:56+00:00 List-Id: Dmitry A. Kazakov wrote: : On Tue, 14 Dec 2004 18:29:16 +0000 (UTC), Georg Bauhaus wrote: : :> Dmitry A. Kazakov wrote: :>: On Tue, 14 Dec 2004 02:25:22 -0500, Warren W. Gay VE3WWG wrote: :>: Yep, the first error one gets: lpq not found. libpq.a is not distributed :>: with GNAT. This might become a problem in the future. :> :> I'm not at all surprised that when I use a binding but not the bound :> thing, I'll get an error. : : Does your OS complain about all devices you could potentially attach via : USB? It is surprising if binding to the operating system fails. Driver not installed? :>: Yes, but from user's perspective, at least one query per connection is :>: always necessary. In some cases the user will need more, but not so often. :> :> I doubt this very much. Indeed, we have a server type application :> that does not work at all without a connection pool, because performance :> is affected rather drastically when you control connections. : : OK, but this does not contradict my point. When you said, "but not so often," and I said, "doubt this very much", (then gave just one example) I wanted to say that many DBes typically _are_ queried frequently, in Hz. But then at the end of your post you write that you envision a distributed application that stores data in the net. Is this the point from wich you argue? Quoting Warren, "You seem to be at cross purposes," maybe? Have you had a chance to study Tanenbaum's et aliorum distributed systems reasearch (Amoeba, The Globe, ...)? There should be plenty of information, including a language study comparing Ada's protected objects and Orca's shared data objects in distributed systems. http://www.cs.vu.nl/pub/papers/[orca/] -- Georg