On Jul 26, 7:55 am, S=E9bastien de Mapias <sglrig...@[EMAIL PROTECTED]
> wrote:
> Hi,
> I'd like to try to familiarize myself with GT.M but I don't know where
> to start. I read a few lines of theory regarding hierarchical database
[KSB] The GT.M Programmers Guide (http://www.fidelityinfoservices.com/
user_do***entation/GTM-PG-UNIX44/index.htm) is a good place to start.
Prof. Richard Walters' book (now online at
http://books.google.com/books?id=3Djo8_Mtmp30kC&dq=3Drichard+walters+m+prog=
ramming&pg=3DPP1&ots=3D2VHbyBYVpC&sig=3DNjGXx8_mwBudFY6JsWKGcO5YUi8&prev=3D=
http://www.google.com/search%3Fq%3Drichard%2Bwalters%2Bm%2Bprogramming%26ie=
%3Dutf-8%26oe%3Dutf-8%26aq%3Dt%26rls%3DSwiftfox:en-US:unofficial%26client%3=
Dfirefox-a&sa=3DX&oi=3Dprint&ct=3Dresult&cd=3D1
or http://tinyurl.com/2bp8cw)
is an excellent resource. You should
download the GT.M Acculturation live CD from the GT.M project page at
Source Forge (http://sourceforge.net/projects/sanchez-gtm).
Burn it,
boot it on a PC with a 512MB or larger USB drive (or a hard drive
partition of that size). Go through the exercises and also use it to
work through programming examples.
Errata: where it says count=3D716800 for the dd command, use
count=3D800000 or more.
> systems, but now would like to try to implement simple things, using
> this engine. Is there a web page somewhere explaining you and telling
> you how to create entries ? How to retrieve, update them etc. ? I'm
> confused because I do not understand the difference between GT.M
> and M[umps]: is it the same ?
[KSB] M / MUMPS is an ISO standard. MUMPS was a trade mark of
Massachusetts General Hospital, but is no longer live so the name can
probably be considered to be in the public domain (caveat: I am not a
lawyer). GT.M[tm] (http://fis-gtm.com)
is a branded commercial
implementation of M by Fidelity National Information Services (http://
fidelityinfoservices.com) that is used in banking / finance (including
what is to my knowledge the largest real time core processing system
in production anywhere in the world) and healthcare.
> If there are no tables and rows in a hierarchical DBMS, what are the
> equivalent concepts in GT.M ? I read things regarding the "difficulty
> to implement many-to-many relation****ps": could someone give me
> an example of working this around with GT.M ?
> In advance, thanks so much !
[KSB] M / GT.M provides a data store, rather than a database
management system. a DBMS is frequently layered on top of M / GT.M
(e.g., VistA's Fileman). But a DBMS is not a requirement.
Good luck, and keep the questions coming!
Regards
-- Bhaskar
ks dot bhaskar at fnis dot com <-- send e-mail here
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