上传页面可以是任何可以处理上传文件的页面，甚至是另外一张Aspx页面。
The upload page can be any page that can handle uploaded pages, even another ASPX page.
另外还需要添加一个外键' user_id '到documents表中，以便知道哪个用户上传某个特定的文档。
You also need to add a foreign key 'user_id' to the DOCUMENTS table so you know the user who uploaded a particular document.
另外，49%的机构使用twitter之类的微博，并在youtube上传视频。
In addition, 49% of the charities studied are also using micro-blogging sites such as Twitter and uploading video to YouTube.
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