Why is TCP said to be connection-oriented

Question

Why is TCP said to be connection-oriented but UDP is said to be connectionless?

Answer 1

TCP is used for applications that require the establishment of connections (as well as TCP’s other service features), like FTP; it works employing a set of rules, as explained earlier, by which a logical connection is negotiated prior to sending data that is why it is known as connection oriented. While as UDP is used by other applications that don't need connections or other features, however do need the faster performance that UDP can offer by not needing to make such connections before sending data that is why it is known as connectionless.