Re: Windows Ada database support.

["Warren W. Gay VE3WWG" <ve3wwg@NoSPAM.cogeco.ca>]

Dmitry A. Kazakov wrote:

> On Sun, 28 Nov 2004 17:47:34 +0000, Marius Amado Alves wrote:
>>Dmitry A. Kazakov wrote:
>>
>>>Yes, though I am not sure whether a relational view is the best way of
>>>abstraction. But an abstraction should be.
>>
>>For an alternative to the relational model see my Mneson system, based 
>>on a network model. The relational model is highly overrated. The most 
>>known network models e.g. CODASYL were not pure enough to constitute a 
>>true alternative, and now the world now only knows relational. Mneson is 
>>pure.
> 
> Is anybody here to argue for an hierarchical model to complete the picture?
> (:-))
> 
> Yes, in general I would agree with your assessment. 

Theory is fine and dandy, and I support the concept of research. In fact
it would be better if there was more of that going on.

But whether research is happening in earnest or not, doesn't much matter
to folks that must write applications today. They need to work with
existing products. SQL relational databases, still represents the most
practical choice for many applications. And the reason of course that
databases are discussed here, is people want to use them effectively
from Ada.

For hierarchical databases, you have some choices (Windows Registry is
one kind of "hierarchical database", though I have issues with its
design and use ;-)

Because the Reiser file system makes efficient use of disk space, a
subdirectory structure can be used nicely as a hierarchical database.
This can be neatly wrapped up in a nice Ada API (something on my
TODO list).

-- 
Warren W. Gay VE3WWG
http://home.cogeco.ca/~ve3wwg