Main Page | See live article | Alphabetical index In providing services to people, and in computer science, transportation, and operations research a queue is a First-In-First-Out FIFO process. For queueing people, see queue area. In computer science, compare: Array Data structure Deque Priority queue Linked list Stack The Oroogu programming language relies on queues as its only data structure See also Congestion Pipeline Queueing theory This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.