Entity Life Histories

  • Paul Beynon-Davies
Part of the Macmillan Computer Science Series book series (COMPSS)


The entity life history (ELH) technique was originally designed to extend the available database design techniques such as E-R diagramming (chapter 16) and normalisation (chapter 15) (Robinson, 1979). Such data analysis techniques concentrate almost exclusively on a static view of the information system being modelled. ELHs, in contrast, were developed as a technique for the explicit modelling of system dynamics (Rosenquist, 1982). In this sense, the ELH may be seen as a competitor to the DFD (chapter 17) and associated process specification techniques (chapter 18). However, the ELH is more closely linked to the logical modelling ideas underlying data analysis.


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  2. Martin J. and McClure T. (1985). Diagramming Techniques for Analysts and Programmers. Prentice Hall, Englewood Cliffs, NJ.Google Scholar
  3. Robinson K.A. (1979). ‘An Entity/Event Data Modelling Method’. The Computer Journal. 22. 270–281.CrossRefGoogle Scholar
  4. Rosenquist C.J. (1982). ‘Entity Life Cycle Models and their Applicability to Information System Development’. The Computer Journal. 25. 307–315.CrossRefGoogle Scholar

Copyright information

© P. Beynon-Davies 1998

Authors and Affiliations

  • Paul Beynon-Davies
    • 1
  1. 1.Department of Computer StudiesUniversity of GlamorganUK

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