How does sites such as livescore.com work? [closed]

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I had an idea to work on a livescore site with some additions, however before even trying to work on one, I would like to know from where such sites get their data from?

Thanks for any answer.

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I've no idea for this particular site, but it seems like there are a couple of viable possibilities:

• Subscribe to a live feed of information from a provider, e.g. a broadcaster or similar. I would imagine this would cost a fair bit and be subject to restrictions on use, etc.
• Hire people to obtain the information from a variety of sources (including primary sources, i.e. watch several of the games) and update a database manually.
• Scrape ("borrow") the information from one or more other sites which do one of the above.

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you can do this using google live sports data api xml ->http://www.xmlsportsfeeds.com/products/live-scores/ it's a kind of paid rss feeds and they can be quite expensive.