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normalization vs de-normalization ?


normalization vs de-normalization ?

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fearghalreilly
fearghalreilly
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In a recent test i was asked this question

when considering normalization vs de-normalization which of the following statements are correct?

A)normalizations speeds up data retrieval at the expense of data modifications
B) de-normalization speeds up data modifications at the expense of data retrieval
C)normalization is the process of putting one fact in numerous places
D)de normalization is the process of putting one fact in one place
E)none of the above
Michael Valentine Jones
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So what did you answer?

What do you think the answer is?
fearghalreilly
fearghalreilly
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i went with answer B but not fully sure if it was the correct decision ....
Lynn Pettis
Lynn Pettis
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I may be wrong (meaning I misunderstood the answers), but I would go with E (None of the above).

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Lynn Pettis

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Orlando Colamatteo
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Looks like A and B are polar opposites, as are C and D, so if only one choice could be correct then I would also go with E.

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GilaMonster
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Where are these test questions from?


Gail Shaw
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Grant Fritchey
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I'm not comfortable with any of those answers. A is somewhat true, but so is B. I'd have to choose E if pushed, but I'd want to have a long discussion about it. This test seems seriously messed up. What's it for?

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Jeff Moden
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I'm with Gail... this type of post seems to be becoming a habit with you. Where are these questions coming from? If they're coming from a MS test, I'd like to remind you that you agreed not to disclose the content of the test and you should stop posting them NOW.

--Jeff Moden

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Although they tell us that they want it real bad, our primary goal is to ensure that we dont actually give it to them that way.
Although change is inevitable, change for the better is not.
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Lynn Pettis
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If these questions are from a MS test, shoot the test writer. None of the answers really make sense.

Cool
Lynn Pettis

For better assistance in answering your questions, click here
For tips to get better help with Performance Problems, click here
For Running Totals and its variations, click here or when working with partitioned tables
For more about Tally Tables, click here
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Orlando Colamatteo
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SSCrazy Eights
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Agreed, not about shooting the test writer but about the nonsensical options. You literally have to rule out all the real choices based on how ambiguous they are. "Compare and contrast normalization and de-normalization with respect to data modifications and the expense of data retrieval."

Now that's a solid question, albeit that approach tends to fall down when writing a multiple choice exam :-D

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There are no special teachers of virtue, because virtue is taught by the whole community. --Plato
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