Enviaments recents

  • Determining the structural events that may violate an integrity constraint 

    Cabot, Jordi; Teniente López, Ernest (2004-07)
    Report de recerca
    Accés obert
    Any implementation of an information system must ensure that an operation is only applied if its execution does not lead to a violation of any of the integrity constraints defined in its conceptual schema. In this ...
  • Especificación de restricciones de integridad en el sistema ROSES 

    Pacheco Silva, María Amelia; Sancho Samsó, María Ribera (1997-04)
    Report de recerca
    Accés obert
    This work studies the integrity constraints specification in the conceptual modeling language of the ROSES system. ROSES is basically a declarative and rule-based system but it incorporates the object-oriented concepts ...
  • SHERPA: Towards a methodological acqusition of ERP solutions 

    Sistach Vallve, Francisco; Fernández, Luís Felipe; Pastor Collado, Juan Antonio (1998-12)
    Report de recerca
    Accés obert
    In the IS area, methods have been focused mostly on IS development and less on its acquisition. In this last issue, we can find simple methods which give generic advises or series of steps on the acquisition of software, ...
  • Consistency preserving updates in deductive databases 

    Mayol Sarroca, Enric; Teniente López, Ernest (2001-06)
    Report de recerca
    Accés obert
    Several problems may arise when a deductive database is updated. The problems that are addressed in this paper are those of integrity constraint maintenance and view updating. In this sense, we define a method that tackles ...
  • Analysis of the ERP project champion role and criticality 

    Esteves, José; Pastor Collado, Juan Antonio (2001-06)
    Report de recerca
    Accés obert
    Existance of an adequate project champion role has been identified as a critical success factor in ERP implementation projects. However, the figure of project champion is not yet quite well understood. Some authors relate ...
  • Multi-star conceptual schemas for OLAP systems 

    Abelló Gamazo, Alberto; Samos, J; Saltor Soler, Félix Enrique (2001-10)
    Report de recerca
    Accés obert
    OLAP tools divide concepts based on whether they are used as analysis dimensions, or are the fact subject of analysis, which gives rise to star shape schemas. Operations are always provided to navigate inside such star ...
  • Goals/questions/metrics method and SAP implementation projects 

    Pastor Collado, Juan Antonio; Esteves, José (2001-11)
    Report de recerca
    Accés obert
    During the last years some researchers have studied the critical success factors (CSFs) in ERP implementations. However, until now, no one has studied how these CSFs should be put in practice to help organizations achieve ...
  • Analyzing temporal integrity constraints to obtain the minimum number of transition rules 

    Martín Escofet, Carme (2001-12)
    Report de recerca
    Accés obert
    The aim of this paper is to obtain advantages for integrity constraint checking in bitemporal deductive databases, analyzing the temporal integrity constraint behaviour. First at all, a new taxonomy of temporal integrity ...
  • YAM2 (Yet Another Multidimensional Model): an extension of UML 

    Abelló Gamazo, Alberto; Samos, J; Saltor Soler, Félix Enrique (2001-10)
    Report de recerca
    Accés obert
    This paper presents a multidimensional conceptual Object-Oriented model, its structures, integrity constraints and query operations. It has been developed as an extension of UML core metaclasses to facilitate its usage, ...
  • Un Modelo de madurez para la gestión del proyecto de investigación-acción en sistemas de información 

    Estay Niculcar, Christian Antonio; Pastor Collado, Juan Antonio (2001-10)
    Report de recerca
    Accés obert
    The importance of Action Research in Information Systems Qualitative Research has been stated by several researchers. But also several problems had been reported. To address these problems, the Information Systems ...

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