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   Author  Topic: Index Size  (Read 8134 times)
mad
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Index Size  
« on: Mar 4th, 2008, 7:42am »
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If we would like to index the entire earth population, how long should the index size be?
 
-This question was asked in someone's interview.
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Random Lack of Squiggily Lines
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Re: Index Size  
« Reply #1 on: Mar 4th, 2008, 3:55pm »
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6,000,000,000+
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Re: Index Size  
« Reply #2 on: Mar 4th, 2008, 4:01pm »
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The population is about 6 billion = 6x(1000)3 < 8x230 = (28)5, so 5 bytes ought to be sufficient.
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Re: Index Size  
« Reply #3 on: Mar 4th, 2008, 4:05pm »
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it's actually ~ 6.5*10^9 people
« Last Edit: Mar 5th, 2008, 7:09am by Random Lack of Squiggily Lines » IP Logged

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Icarus
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Re: Index Size  
« Reply #4 on: Mar 4th, 2008, 4:15pm »
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No, I think 6 billion is much closer to the number of people in the world than 65 million.
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Re: Index Size  
« Reply #5 on: Mar 4th, 2008, 4:22pm »
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sorry, not the exponent type of guy. fix3d it
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Re: Index Size  
« Reply #6 on: Mar 4th, 2008, 4:36pm »
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Not yet. That one is 650 million. Count the number of places the decimal point has moved.
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Re: Index Size  
« Reply #7 on: Mar 5th, 2008, 1:31am »
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It all depends what is the key to your index.
 
To actually identify a person worldwide you would probably have to store all the names and birth dates, probably also the parent's names, for identification purposes.   So count at least 100 bytes per entry.
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Re: Index Size  
« Reply #8 on: Mar 5th, 2008, 7:09am »
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i misplaced the 4, sorry. (again)
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Re: Index Size  
« Reply #9 on: Mar 5th, 2008, 1:08pm »
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You misplaced the 4 again?  Dear, can't you be careful with these things?  When you find it, please return it between the 3 and the 5 where it belongs, so we can all use it when necessary.
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Re: Index Size  
« Reply #10 on: Mar 6th, 2008, 4:31am »
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oh, i made copyies, but they are on my table, with nowhere to go. if you would like one, just phone me.
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mbringas
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Re: Index Size  
« Reply #11 on: Mar 7th, 2012, 12:09pm »
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7,000,000,000+ is actually the people in the earth...  
 
1->1
 
 
 
Regards,
Mauricio
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« Last Edit: Mar 7th, 2012, 12:34pm by towr » IP Logged
seoteknik
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Re: Index Size  
« Reply #12 on: Sep 2nd, 2012, 6:10pm »
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I know it must maximum size : 30 KB.
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Re: Index Size  
« Reply #13 on: Oct 6th, 2013, 4:39pm »
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now 7 billion + Sad
« Last Edit: Oct 6th, 2013, 4:39pm by webtasarim » IP Logged
bal
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Re: Index Size  
« Reply #14 on: Apr 27th, 2014, 1:48pm »
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Now 7.2 +
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