Re: Lucid statement of the MV vs RM position?

Jan Hidders wrote:

> dawn wrote:
>

>>Jan Hidders wrote:
>>
>>>dawn wrote:
>>>
>>>>OK, so you told me the jury was out regarding modeling and implementing
>>>>with non-1NF data (or something like that);
>>>
>>>Not exactly. What the jury is out on is whether you can still have both
>>>efficiency and data-independence at the same time, which requires
>>>powerful query optimization.
>>
>>Ah, that data independence thing again.

>>There are plenty of
>>requirements and I definitely do not want changes in the need for
>>additional disk or any physical changes like that to prompt a change in
>>software, but I still don't grok this requirement fully.

Shouldn't it suffice to point her to the principle of separating concerns or the concept of orthogonality? After all, she claims to have a background in mathematics.

>>For example, do we want the requirement that if data are moved from
>>schema-A on host-A managed by subsidiary-A to schema-B on host-B
>>managed by subsidiary-B, then must not be a need to change the logical
>>data model used by the applications, so that applications can run
>>without changes simply by redirecting (outside of the apps) requests
>>for such data to another data source?  Obviously, that would be nice.

Is that a polite way of saying she is a self aggrandizing ignorant?

>>I'd like to take the overall functional requirements for a database
>>management system (which are not the same for every organization, I
>>will grant) and optimize all together rather than declaring a single
>>non-functional requirement as fixed in stone, while users might not get
>>what they need.  Obviously, we want to have maintainability,
>>reliability, security, and all other non-functional requirements met,
>>but these need to be turned into functional requirements, it seems,
>>before they can be tested.

Yay! We have an ally!

Ask yourself: Is reading the voluminous posts of a handful of cranks an effective way to manage your time? How much time does it take each day? What benefits do you get from reading all of that stuff? How many decent pedagogic opportunities arise? Would you find similar opportunities if you just read posts by other people? Would you get the same personal benefits?

Now consider your other options. What benefits would you get from devoting more time to your girlfriend? How much value would she place on that time?

Ask yourself if you could achieve more with your participation here with less investment of time and energy while freeing up time for better things? Received on Fri May 05 2006 - 01:44:06 CEST