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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Ada package registry?
Date: Mon, 8 Feb 2016 09:38:24 +0100
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Date: 2016-02-08T09:38:24+01:00
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On 07/02/2016 21:07, Björn Lundin wrote:
> On 2016-02-07 01:16, Jeffrey R. Carter wrote:

>> Whether selecting desired data from a large data set is easier or faster with a
>> DBMS or some form of Ada persistent containers is a more interesting question.
>
> That depends on the model amongst many things.
> But that is not the most interesting question.
> That one is about data openess for end users.

That suggests containers more closed than DB. This is a wrong assumption.

The difference is that DB interface is lower level compared to a 
container library, which makes the later more difficult to use in the 
environment where everything is communicated through files. It is 
self-replicating lowest common denominator design which poisons everything.

> Do they have to hire someone to get data into a report,
> or can they do it themselves.
>
> And end users are rarely programmers in this case, but
> they do know SQL, or are sent to courses to learn it.
>

SQL is a language, so they are programmers. But in my world no customer 
writes SQL queries. It is just to many DBs, too many tables and too much 
data for a customer to learn an handle. All types of reports are done 
from the GUI with corresponding parameters given from the GUI.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de