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,e686c2c95beefb1c X-Google-Attributes: gid103376,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news2.google.com!fu-berlin.de!uni-berlin.de!not-for-mail From: "Martin Dowie" Newsgroups: comp.lang.ada Subject: Re: Inserting Calendar.Time in a database Date: Wed, 25 Aug 2004 10:42:19 +0100 Organization: BAE SYSTEMS Message-ID: <412c5cf2$1_1@baen1673807.greenlnk.net> References: <1jgik0ntrex36$.1pyha1husddpe.dlg@40tude.net> <412c4958_1@baen1673807.greenlnk.net> <34dzl9dpx3w0.4ghwziy6e7p9$.dlg@40tude.net> X-Trace: news.uni-berlin.de S1jkstu73ViDp0PUQbsxtg4RLnfukG4kygpdPl6/Ihb8UkDB6u X-Orig-Path: baen1673807.greenlnk.net!baen1673807!not-for-mail X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 5.50.4807.1700 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4807.1700 X-Original-NNTP-Posting-Host: baen1673807.greenlnk.net Xref: g2news1.google.com comp.lang.ada:2987 Date: 2004-08-25T10:42:19+01:00 List-Id: Dmitry A. Kazakov wrote: > This works only locally. Consider a distributed data acquisition and > control system. You measure some data at physically distinct places. > The sensors and actors are interconnected using say Ethernet. Ada is > the best candidate for implementing nodes of the system, right? Now, > how would you ensure data consistency across the system? A practical > example, is a mileage dynamometer. A test runs for weeks. Maximal > data frequency is say 1 kHz. I have seen this on a distributed system (over 1553). You have to do some fancy synchronisation and take errors into account but it can been done. At least to the accuracy required by that system ;-) Cheers -- Martin