File transfers involve moving computer files between systems through push or pull methods. They can be done through file sharing, email attachments, or instant messaging. The sender uploads while the recipient downloads. Email transfers use both push and pull methods.
A file transfer is the process of transferring or moving any type of computer file from one computer or system to another through a number of different methods. These various methods typically fall into one of two main categories: push-based systems and pull-based systems. In both systems there are usually two parties involved in the transfer: the sender and the recipient of the file. A file transfer is usually referred to as an upload or a download, depending on the person’s perspective on the transfer process.
Sometimes used synonymously with file sharing, a file transfer can refer to a wide range of different situations in which a computer file is transferred from one person or system to another. The person or system from which the file is transferred is called the sender, and the person or system receiving the file is called the recipient. There are several methods that can be used to support a file transfer, such as file sharing systems using peer-to-peer servers, email attachments, copying files from a computer to a portable storage device, and sending files via an instant messaging program.
When a file transfer occurs, the sender typically refers to the process as an upload, while the recipient refers to the transfer as a download. These terms refer to the overall process itself, but also indicate the viewpoints of those involved. In any type of file transfer, the process usually happens via a push or pull system. Push indicates that a file is being transferred via active upload; the sender is actively trying to transfer the file to the recipient. A pull transfer occurs when the recipient is actively trying to access the file being transferred.
Using email to enable file transfers is an example of using a push and pull system. When the sender attaches a file to an email message and sends it, they use a push system to transfer the file to the email server system. The recipient then receives an email notification of the transfer, and when the recipient downloads the file, they use a pull system to transfer the file from the email server to their system. A file transfer usually involves copying and transferring a file, rather than sending an original file from one system to another, although this is also possible.
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