Do the most companies store their information in databases?
I'm now creating a big, big site and if we look at a company in the size of Facebook, do they store their texts and such in files or do they store it in databases? 

Which should I pick? Store all in databases or files?
Do the most companies store their information in databases?
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I'm now creating a big, big site and if we look at a company in the size of Facebook, do they store their texts and such in files or do they store it in databases? 

Which should I pick? Store all in databases or files?