You clearly don't know much about BBall rules or officiating the game. An offensive player is allowed to put his hands on a defender as long as he does not push off. A defender by rule is not allowed to put his hands on an offensive player, especially when an offensive player is attempting to move or make a cut.

Here is the link to the video of the play; http://www.cougarboard.com/board/message.html?id=13337120

In the video you will see Tyler attempting to make a cut and the defender has an arm bar across Tyler's chest preventing him from getting into a position to receive the basketball. That is the very definition of holding by the defender.

It is simple advantage/disadvantage. The defender by putting his forearm across Tyler's chest has gained a clear advantage over Tyler. With his forearm across Tyler's chest he can control Tyler's movements and prevent him from getting to where he wants to go.

An example of good D is when the defender keeps his arm extended away from the body so there is no doubt he is not using his hands or arms to gain an advantage.