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HDM2: Extending the E-R approach to hypermedia application design

  • Franca Garzotto
  • Luca Mainetti
  • Paolo Paolini
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 823)

Abstract

The paper is a brief introduction to HDM2, which is the evolution of the Hypertext Design Model HDM [9]. The main features of HDM2, with respect to HDM, are an improvement of the access mechanisms, a generalisation of the notion of link, an extension of the notion of derivation, the definition of hyperviews, and finally a refinement of the definition of browsing semantics.

HDM2 (as HDM) is heavily based upon the Entity-Relationship model. There, however, relevant structural differences for Entities and Relationships (webs in our terminology) and access structures. Another important difference is the navigational interpretation of the model, provided by the definition of its browsing semantics.

Keywords

Access Structure Entity Type Control Node Centre Perspective Data Base System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1994

Authors and Affiliations

  • Franca Garzotto
    • 1
  • Luca Mainetti
    • 1
  • Paolo Paolini
    • 1
  1. 1.Dipartimento di Elettronica e InformazionePolitecnico di MilanoMilanoItaly

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