[ALL] let's think about Query Language for 2.0

[Ruslan Zasukhin]

on 5/23/03 1:52 PM, Andreas Grosam at agrosam at computerworks.ch wrote:

>> 3) Query must be able to support Relational model, Netowrk model,
>> Object-Relational model and Object model.
> 
> - Supporting Relational Model
> of course!
> 
> - Supporting the Network Model
> 
> Don't know whether this is important in Valentina!?
> Does Valentina implement the Network Data Model according CODASYL??
> (Group Item, Set Type, Record Type, etc.)??

No, and never will.

I name network model, ability for C++ developers now, and may be in future
RB developers do searches on tables, get sets of found records, go from
found record to N related records. This idea demonstrate example Plant in
VSDK. 

I think that it is not important that we do not name them Group Item and so
on. The main is principle of access to records.


> -  Supporting the Object-Relational and Object Model
> 
> This extends the relational model by introducing Objects. Objects have
> attributes, methods, class members, class methods, inheritance,
> encapsulation, polymorphism, members which are itself objects, etc.
> A lot of questions arise:
> Where is the code for member functions located, how to ensure
> encapsulation, relaxing encapsulation? And several hundreds more!

Yes, correct. And I cannot wait when I put hands on this theme!!!!!!
This is the most interesting for me.
And the biggest fun.

-- 
Best regards,
Ruslan Zasukhin      [ I feel the need...the need for speed ]
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e-mail: ruslan at paradigmasoft.com
web: http://www.paradigmasoft.com

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