Re: Extending my question. Was: The relational model and relational algebra - why did SQL become the industry standard?

Bob Badour wrote:
>"Jan Hidders" <jan.hidders_at_REMOVE.THIS.ua.ac.be> wrote in message
>news:3e63d2c4.0_at_news.ruca.ua.ac.be...
>> Lauri Pietarinen wrote:
>> >Jan Hidders wrote:
>> >>
>> >>Well, your specific example involves recognizing that duplicate
>> >>elimination is not necessary in the view. That was something that was
>> >>researched as (relatively) recently as 1994:
>> >>
>> >> http://www.informatik.uni-trier.de/~ley/db/conf/icde/PaulleyL94.html
>> >
>> >OK, point being that if SQL had not had duplicates from the start the
>> >motivation for such research would have been much stronger, and we would
>> >have got results sooner.
>>
>> Could be, but note that this would then be because you made things
>> *harder* for the implementors and forced them to think about these
>> issues.
>
>Are you saying that in a choice between "harder requiring more careful
>thought from dbms implementors" and "harder requiring more careful thought
>from dbms end-users", you would opt to burden the end-users?

No.

• Jan Hidders