I used to ask myself , Where exactly are sharepoint documents stored ?
hmm may be on the file system ? no ! Not reasonable..
In the content database ? hmm
After investigating this subject, I found out that every time you save a document in the document library on a SharePoint site, the entire contents of the document is saved in binary format in a single image-type field in the SharePoint database.
WOW, an entire document in a single field ??
When I told a colleague about that he asked me for an evidence.
Guys, check this link : http://msdn.microsoft.com/en-us/library/ms998690.aspx , documentation on the Microsoft Developer Network always says the truth 🙂