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Just as an example, when the last data dump was released I created a small C# program to convert it into Protocol Buffers format, but omitting the text. The text itself is rarely interesting for data mining purposes, but obviously takes up a lot of the space.

That raises three alternative formats immediately:

  • Protocol Buffer (with .proto files obviously) including text
  • Protocol Buffer excluding text
  • XML excluding text

My guess is that not very many people are interested in the PB format, but if I were to also provide some appropriate tools to make it LINQ friendly, it may be fairly easy to create a LINQPad plugin or whatever. I find it easier to write LINQ than SQL :)

It might also be good to have a "diff" format so that people who have the previous data dumps can easily add the new ones. That would need to include deletions as well, of course - it wouldn't be a trivial thing to do (well, not for me anyway) but would make it a lot lighter each month.

I'm not suggesting that Jeff should be doing this by the way - although the no-text XML version would probably be welcome and relatively easy...

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JSON :P –  bananakata Jul 7 '09 at 9:56
    
yay proto ;-p . –  Marc Gravell Jul 7 '09 at 10:53
    
@Jon looks like is_cc_wiki missed the train, so i would expect more schema changes on post next month ... –  waffles Jul 7 '09 at 23:40
    
CC Wiki will be in the next dump –  Geoff Dalgas Jul 31 '09 at 19:29

1 Answer 1

Regarding the diff format, its going to be really hard as there is at least one new fields in the upcoming dump (is community wiki)

Personally, I am happy with the current one XML file fits all solution, it does not take too long to download over bittorrent and I am able to load it all into my local SQL server DB in about 6 minutes.

Also, I find the text quite useful, for example I used the text in the comments here.

I fear that introducing any complexity will reduce the teams inclination to work on this.

My biggest wish would be for a daily diff as opposed to a monthly diff. Cause that would allow for much faster feedback loops.

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New fields would certainly merit new full dumps - but I don't expect the format to change that often. A daily diff would be interesting... –  Jon Skeet Jul 7 '09 at 10:40

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