scispace - formally typeset
Journal ArticleDOI

On visual formalisms

David Harel
- 01 May 1988 - 
- Vol. 31, Iss: 5, pp 514-530
TLDR
The higraph, a general kind of diagramming object, forms a visual formalism of topological nature that is suited for a wide array of applications to databases, knowledge representation, and the behavioral specification of complex concurrent systems using the higraph-based language of statecharts.
Abstract
The higraph, a general kind of diagramming object, forms a visual formalism of topological nature. Higraphs are suited for a wide array of applications to databases, knowledge representation, and, most notably, the behavioral specification of complex concurrent systems using the higraph-based language of statecharts.

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Citations
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Book ChapterDOI

Web Services Based Architectures to Support Dynamic Inter-organizational Business Processes

TL;DR: Based on the paradigm of the composite application, an architecture designed to support dynamic inter-organizational business processes has been developed and will be introduced.
Book ChapterDOI

An Algorithm for Drawing Compound Graphs

TL;DR: A new algorithm, called Nuage, for drawing graphs with both adjacency and inclusion relationships between nodes, that is, compound graphs, which is more general than classical graph models or clustered graphs is presented.
Proceedings ArticleDOI

Can intuition become rigorous? Foundations for UML model verification tools

TL;DR: The paper reports on research to facilitate the formal revision of UML informal specifications, based on algebraic specification formal theory, which is used to formalize the UML Statechart diagrams and subsequently verify them.
Journal Article

Computer automated multi-paradigm modeling

TL;DR: An overview of the CAMPaM field is presented and it is shown how transformations assume a central place and are explicitly modeled themselves by graph grammars.
Proceedings ArticleDOI

A Model Based Testing Technique to Test Web Applications Using Statecharts

TL;DR: A model based software testing method for testing of the Web applications using StateCharts, which briefly describes the test coverage technique, editorial tools for drawing State Charts, modeling concurrency in Web applications, and test metrics.
References
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Book

Graph theory

Frank Harary
Book

Introduction to Automata Theory, Languages, and Computation

TL;DR: This book is a rigorous exposition of formal languages and models of computation, with an introduction to computational complexity, appropriate for upper-level computer science undergraduates who are comfortable with mathematical arguments.
Journal ArticleDOI

Communicating sequential processes

TL;DR: It is suggested that input and output are basic primitives of programming and that parallel composition of communicating sequential processes is a fundamental program structuring method.
Journal ArticleDOI

Statecharts: A visual formalism for complex systems

TL;DR: It is intended to demonstrate here that statecharts counter many of the objections raised against conventional state diagrams, and thus appear to render specification by diagrams an attractive and plausible approach.
Book

The entity-relationship model: toward a unified view of data

TL;DR: A data model, called the entity-relationship model, is proposed that incorporates some of the important semantic information about the real world and can be used as a basis for unification of different views of data: the network model, the relational model, and the entity set model.