Re: relational tables and objects
Date: Tue, 29 Oct 2002 14:48:39 +0100
Arkadiy Vertleyb wrote:
> The full set of relational operators is implemented:
> The operators can be combined in expressions using the technique known
> as "expression templates", so something like this can be written:
> print(projection >(selection(eq(1), employees))); //
> select an employee with ssn = 1, and print the name
> We think that such a lightweight library could bring relational
> algebra into the areas where it previously was not considered because
> of the overhead and limitations traditional RDBMSs impose.
There is no such a think as a "traditional RDBMS". Perhaps you are thinking "traditional SQL DBMS"?
> writing a simulation system or a game. Which objects are located
> close to each other and so need to interact? All such pairs are
> easily found with join. What are integral characteristics of the
> system? Use groupby. And so on.
I would rather have a lightweight, D-compliant relational engine built-in into the OS or development framework. Say Dataphor Alphora Lite… you might consider making your language D-compliant, see The Third Manifesto at http://www.thethirdmanifesto.com/.
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