This article reviews the Triune Continuum Paradigm—a logically rigorous theoretical base for organization of conceptual frameworks that are used for system modeling in different contexts (e.g., in software development, in enterprise architecture, in the architecture of financial services, in jurisprudence, etc.). This paradigm is an important contribution to the system modeling domain, because currently none of the prevailing system modeling frameworks has a satisfactory formal theoretical foundation.

Abstract. Nowadays models, rather than code, become the key artifacts of software development. Consequently, this raises the level of requirements for modeling languages on which modeling practitioners should rely in their work. A minor inconsistency of a modeling language metamodel may cause major problems in the language applications; thus with the model driven systems development the solidness of modeling languages metamodels becomes particularly important. In its current state the UML metamodel leaves a significant area for improvement. We present an alternative metamodel that was inspired by the RM-ODP standard and that solves the problems of UML. RM-ODP was mentioned in UML specifications as a framework that has already influenced UML. Our metamodel was formalized, thus its resulting models can be simulated and checked for consistency. So, our proposed solution with constructive potential towards improvement of the UML metamodel, may have a significant practical impact on the UML specifications. IntroductionModern practices of software development should successfully manage the progressing complexity of modeling problems. Consequently, this raises the level of requirements for modeling languages on which practitioners, such as software designers and IT system architects, should rely in their everyday modeling work. A minor imperfection of a modeling language metamodel may cause major problems in the language applications. Thus with the model-driven systems development, the solidity of foundations of modeling languages becomes particularly important. These foundations include, for example:the overall internal consistency of semantics of a modeling language, -the coherency and unambiguity in semantics definitions presenting relations between a model constructed using the modeling language from one side and the subject of modeling that is represented by the model from the other side,

The development of business and information systems requires a significant amount of modeling. The current modeling languages and tools have difficulties supporting the modeling of systems spanning through multiple organizational levels. The use of inadequate modeling abstractions is one of the important causes for these difficulties. This paper proposes an ontology that defines the concepts needed for object-oriented modeling and gives a graphical example. The ontology is based on RM-ODP and relies on Constructivism and System Theory. The proposed ontology allows the definition of development methods, modeling languages and tools that are applicable to complex systems. This can lead to significant productivity improvements in the business and software development communities.

No abstract

This article reviews the Triune Continuum Paradigm - a logically rigorous theoretical base for organization of modern conceptual frameworks that are used for system modeling in different contexts (e.g., in software development, in enterprise architecture, in the architecture of financial services, in jurisprudence, etc.). This paradigm is an important contribution to the system modeling domain, because currently none of the prevailing system modeling frameworks has a satisfactory formal theoretical foundation.