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OVERVIEW

A modeling language can be graphical or textual. Xiao He ea., ''A metamodel for the notation of graphical modeling languages'', in: ''Computer Software and Applications Conference, 2007. COMPSAC 2007 - Vol. 1. 31st Annual International'', Volume 1, Issue , 24-27 July 2007 Page(s):219 - 224.

  • ''Graphical'' modeling languages use a Diagram Techniques with named symbols that represent concepts and lines that connect the symbols and that represent relationships and various other graphical annotation to represent constraints.

  • ''Textual'' modeling languages typically use standardised keywords accompanied by parameters to make computer-interpretable expressions.


An example of a graphical modeling language and a corresponding textual modeling language is EXPRESS-G and EXPRESS ( ISO 10303-11 ).

Not all modeling languages are executable, and for those that are, the use of them doesn't necessarily mean that programmers are no longer required. On the contrary, executable modeling languages are intended to amplify the productivity of skilled programmers, so that they can address more challenging problems, such as Parallel Computing and Distributed System s.

A large number of modeling languages appear in the literature.


EXAMPLES

Example of modelling languages are:
  • EXPRESS and EXPRESS-G ( ISO 10303-11 ) is an international standard general-purpose Data Modeling language. It is used among others to specify various ISO standard data models, such as the application protocols of ISO 10303 (STEP), ISO 13584, ISO 15926 and others.

  • Unified Modeling Language (UML) is a General-purpose Modeling language that is an industry standard for specifying software-intensive systems. UML 2.0, the current version, supports thirteen different diagram techniques, and has widespread tool support.

  • Petri Net s use variations on exactly one diagramming technique and topology, namely the Bipartite Graph . The simplicity of its basic user interface easily enabled extensive tool support over the years, particularly in the areas of model checking, graphically-oriented simulation, and software verification.

  • IDEF is a family of modeling languages, the most notable of which include IDEF0, for functional modeling, and IDEF1 for information modeling.

  • SysML is a Domain-Specific Modeling language for Systems Engineering that is defined as a UML profile (customization).

  • Energy Systems Language (ESL), a language that aims to model ecological energetics & global economics.

  • Business Process Modeling Notation (BPNM, and the XML form BPML) is an example of a Process Modeling language.

  • Fundamental Modeling Concepts (FMC) modeling language for software-intensive systems.

  • Gellish English , a structured subset of natural English, which includes a Gellish English Dictionary and in which facts are expressed in a standardised Gellish Database Table {Link without Title} . Gellish English is not a meta language, but integrates and upper ontology with domain ontologies in one language.



APPLICATIONS

Various kinds of modeling languages are applied in different disciplines, including Computer Science , Information Management , Business Process Modeling , Software Engineering , and Systems Engineering . Modeling languages can be used to specify system requirements, structures and behaviors. Modeling languages are intended to be used to precisely specify systems so that stakeholders (e.g., customers, operators, analysts, designers) can better understand the system being modeled.
The more mature modeling languages are precise, consistent and executable. Informal diagramming techniques applied with drawing tools are expected to produce useful pictorial representations of system requirements, structures and behaviors, but not much else. Executable modeling languages applied with proper tool support, however, are expected to automate system Verification , Validation , Simulation and Code Generation from the same representations.


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