...our attempt at integrating terminologies between different disciplines, which look at the problem differently, so some of the terms have different meanings in different disciplines.
...good at abstracting from lower-level details of integration and interoperability, helping with partitioning problems into orthogonal sub-problems of conceptual data, physical data optimization, and control flow, & ideal for complex web services project
A metamodel is a precise definition of the constructs and rules needed for creating semantic models...an attempt at describing the world around us for a particular purpose.