A diagrammatic representation; an outline or model.(noun)
Psychology A pattern imposed on complex reality or experience to assist in explaining it, mediate perception, or guide response.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
"Using aGML application schema is clearly not a sufficient condition for interoperability, and only maybe is a necessary condition, but plenty of evidence that it helps. (lots more, but he talks faster than I can type … phew.) 15: 45: JohnLaxton, talking aboutGeoSciML v2: an interchange and mark-up language for geologic information."
"A schema is a way of thinking about or understanding the world, a “lens” or “window” through which one views reality."