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Page compression


Page compression

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Steve Jones
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Comments posted to this topic are about the item Page compression

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Nice question, but just one small problem:

"In prefix compression, does the entire prefix stored in the header need to match the data to be used?"
--> requires the answer NO to be correct

"In other words, if I have a prefix of "aaabcd" in the header and a data element of "aaabfgr" in a field, can prefix compression be applied?"
--> requires the answer YES to be correct

I chose NO, but apparently that was the wrong one, although I meant to answer the first question.


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khullargirish02
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The answers are different for each line.
In prefix compression, does the entire prefix stored in the header need to match the data to be used?
No
if I have a prefix of "aaabcd" in the header and a data element of "aaabfgr" in a field, can prefix compression be applied?
Yes..

I choose No, and it gave incorrect....Hehe
Chris Houghton
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khullargirish02 (5/27/2011)
The answers are different for each line.
In prefix compression, does the entire prefix stored in the header need to match the data to be used?
No
if I have a prefix of "aaabcd" in the header and a data element of "aaabfgr" in a field, can prefix compression be applied?
Yes..

I choose No, and it gave incorrect....Hehe


Same here - I answered the first question as a no.Rolleyes
DugyC
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Yep, 2 different questions with 2 different answers.

Fortunately for me I answered the second question, but I can understand the frustration for those that answered the first.

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TomThomson
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I answered the second sentence, after reading the whole question (or, rather, both questions ;-)). But I did that with some trepidation, as guessing which of the two questions to answer wasn't a sure thing.

Very interesting question though. I used to assume that a full match was required and was startled to discover it wasn't (and because I found it startling, I remembered it).

Tom

M&M
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Thanks for the question

M&M
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Chris Houghton (5/27/2011)
khullargirish02 (5/27/2011)
The answers are different for each line.
In prefix compression, does the entire prefix stored in the header need to match the data to be used?
No
if I have a prefix of "aaabcd" in the header and a data element of "aaabfgr" in a field, can prefix compression be applied?
Yes..

I choose No, and it gave incorrect....Hehe


Same here - I answered the first question as a no.Rolleyes


And me too!
w00t

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Kiara
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Very good question topic. I learned something - which is always the point!

-Ki
OCTom
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It's impossible to answer this. My mind is in an infinite loop...
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