other formats (Re: [Dev] 4Suite RDF and ZOD)
egerlach at canada.com
Sun Nov 3 10:15:38 PST 2002
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At 11:57 PM 02/11/02 -0800, David McCusker wrote:
>The performance impact of extra
>layers is generally neglible as long as there are not many layers,
>as long as copying doesn't happen heavily at each layer boundary.
I agree completely with your entire post, David. The one thing I will
add is the following, which I consider an important rule: The
performance impact of a layer is not negligible if and only if the
layer itself is negligible. That is to say, the only time a layer has
a discernable performance impact is if it does nothing (i.e.
I am going to reply to a point in your other post too:
At 01:42 PM 03/11/02 +0000, Bill de hÓra wrote:
>David McCusker wrote:
>> The phrase "RDF-based PIM" makes it sound like RDF is somehow
>> in the architecture so it cannot be replaced with something else. I
>> get the idea this was the long term desire. Other ways of writing
>> persistently might join Morgan's RDF prototype.
>Perhaps this is what happens when you specify technologies as
>requirements ahead of use cases.
That is a *VERY* important point. The technology used should be
dictated by the use cases, not the other way around. I eventually
think that we'll come back to RDF et al., but that's not how we should
start. Would you believe I just took a course on this at work?
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