The Dutch - for whom their outstanding batsman Bas Zuiderent scored 116 not out - join Bermuda, Canada, hosts Ireland and Scotland who had already qualified from this tournament.
Having narrowly missed out on automatic qualification during the group stage, Holland bounced back with two emphatic victories to seal the final place in the Caribbean.
The Dutch beat Denmark by 89 runs on Saturday to reach the play-off and proved far too strong for UAE to claim a victory that will see them compete in a second consecutive ICC Cricket World Cup and third in total.
The key to Holland's victory was the composure under pressure of their batsmen.
However, they struggled early on losing two quick wickets after being put in to bat. The swinging white ball saw Luuk van Troost and Dan van Bunge trudging back to the pavilion with only 15 on the board.
But Zuiderent, Holland's outstanding batsman of the tournament, took responsibility for anchoring the innings. In tandem with Tim de Leede, he set about steering the Dutch into the ascendancy.
By the time that de Leede was out for 65 Holland had a solid platform so in the final overs Zuiderent and Ryan ten Doeschate were able to play without inhibition to push the score to 287 for four in 50 overs.
Ten Doeschate finished on 65 not out while Zuiderent had strolled to his third century of the tournament.
UAE had cause for optimism as they had beaten Holland in the 2004 ICC Six Nations Challenge on home soil, but they were soon to be disabused of any thoughts of victory.
They took an attacking approach from the start which kept them in touch with the run rate but at the expense of valuable wickets as too many players took chances against the disciplined Dutch pace attack.
Five different bowlers picked up wickets as Holland rattled through the UAE batting line-up. The game was wrapped up when Ali Asad Abbas was clean-bowled by Billy Stelling with the third ball of the 32nd over to leave UAE all out for 142.