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dawn wrote:
> Jan Hidders wrote:
>
>>dawn schreef: >> >>>Jan Hidders wrote: >>>> >>>>The reason to avoid lists is >>>>far more mundane and practical; it would make the DBMS more complex and >>>>make tasks such as query optimization, concurrency control and integrity >>>>maintenance harder. >>> >>>Harder for whom? >> >>The implementors of the DBMS.
That is what has been looked at, and the claim of the relational model is that in the cases where data independence, concurrency control and integrity maintenance are important it indeed does that.
>>PS. I'm really signing off now as my train leaves within a few hours. >>Expect a reply after a week or so.
Thanks. :-)
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