Re: Fitzle

Joe asked:

>P.S. Jeff, I'd be interested to see how SQL is non-procedural.  I'm not
>doubting you, I'm just intrigued.  I have to believe that hybrids like
>embedded SQL are certainly procedural.  How is "pure" SQL
>non-procedural?

My understanding of this classification makes it pretty simple. SQL 
specifies "what" not "how". To elaborate, in SQL you make no attempt to 
tell the system how to achieve the results you want. You simply specify a 
relational predicate. The DBMS pulls together the tables and views needed 
and figures out how best to run the query. The real clue is that there are 
no looping constructs (at least not in plain old SQL '92, or whatever).

In a procedural language you are able to control, or at least influence, 
the sequence of execution of the code.

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Jeff Furgal / MIMIX User Interface Product Architect / Lakeview Technology

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