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Travel agency: A LOGIDATA+ application

  • Luca Cabibbo
  • Giansalvatore Mecca
Part II: The Model and the Language
Part of the Lecture Notes in Computer Science book series (LNCS, volume 701)

Abstract

Expressive power and flexibility of the LOGIDATA+ model and language are explored. We analyze a program for travel agencies: the problem we consider is concerned with the construction of travels on the basis of the clientś specifications. The program queries the database and generates a report with all the available choices in terms of transfers and accomodations. The scheme and the clauses use a wide range of language functionalities, as complex objects, object identifiers, classes, relations, functions, is-a relationships and recursion.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • Luca Cabibbo
    • 1
  • Giansalvatore Mecca
    • 1
  1. 1.Dipartimento di Informatica e SistemisticaUniversità di Roma “La Sapienza”RomaItaly

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