Now showing items 1-12 of 12

  • A platform independent model for the electronic marketplace domain 

    Queralt Calafat, Anna; Teniente López, Ernest (2005-04)
    External research report
    Open Access
    An electronic marketplace supports the interaction among different users to exchange information about products to sell and buy. Significance of electronic marketplaces is given by the huge amount of web sites that are ...
  • An analysis pattern for electronic marketplaces 

    Queralt Calafat, Anna; Teniente López, Ernest (2004-02)
    External research report
    Open Access
    An electronic marketplace supports the interaction among different users to exchange information about products to sell and buy. Significance of electronic marketplaces is given by the huge amount of web sites that are ...
  • AuRUS: Automated Reasoning on UML/OCL Schemas 

    Queralt Calafat, Anna; Rull Fort, Guillem; Teniente López, Ernest; Farré Tost, Carles; Urpí Tubella, Antoni (Springer Verlag, 2010)
    Conference lecture
    Restricted access - publisher's policy
    To ensure the quality of an information system, the conceptual schema that represents its domain must be semantically correct. We present a prototype to automatically check whether a UML schema with OCL constraints is right ...
  • EU-Rent as an artifact-centric process model: technical report 

    Estañol Lamarca, Montserrat; Queralt Calafat, Anna; Sancho Samsó, María Ribera; Teniente López, Ernest (2012-09-20)
    External research report
    Open Access
    Business process modeling using an artifact-centric approach has raised a significant interest over the last few years. This approach is usually stated in terms of the BALSA framework which defi nes the four dimensions ...
  • Facilitating the definition of general constraints in UML (extended version) 

    Costal Costa, Dolors; Gómez Seoane, Cristina; Queralt Calafat, Anna; Raventós Pagès, Ruth; Teniente López, Ernest (2006-04)
    External research report
    Open Access
    One important aspect in the specification of conceptual schemas is the definition of general constraints that cannot be expressed by the predefined constructs provided by conceptual modeling languages. In general this is ...
  • OCL-Lite: a decidable (yet expressive) fragment of OCL 

    Queralt Calafat, Anna; Artale, Alessandro; Calvanese, Diego; Teniente López, Ernest (2012)
    Conference report
    Open Access
    UML has become a de facto standard in conceptual modeling. Class diagrams in UML allow one to model the data in the domain of interest by specifying a set of graphical constraints. However, in most cases one needs to provide ...
  • Reasoning on UML class diagrams with OCL constraints 

    Queralt Calafat, Anna; Teniente López, Ernest (2006-04)
    External research report
    Open Access
    We propose a new approach to check whether a given UML class diagram with its OCL integrity constraints satisfies a set of desirable properties such as schema satisfiability, class liveliness, redundancy of integrity ...
  • Strict and extended interpretations of operation contracts in conceptual modeling 

    Queralt Calafat, Anna; Teniente López, Ernest (2005-05)
    External research report
    Open Access
    This paper describes two different ways of understanding operation contracts in conceptual modeling. The main difference between them lies in the way operation postconditions and integrity constraints are guaranteed, which ...
  • Towards DaaS 2.0: enriching data models 

    Marti Fraiz, Jonathan; Gasull, Daniel; Queralt Calafat, Anna; Cortés Rosselló, Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Open Access
    Current Data as a Service solutions present a lack of flexibility in terms of allowing users to customize the underlying data models by including new concepts or functionalities. Data providers either publish global APIs ...
  • Validation of UML conceptual schemas with OCL constraints and operations 

    Queralt Calafat, Anna (Universitat Politècnica de Catalunya, 2009-03-02)
    Doctoral thesis
    Open Access
  • Validation of UML conceptual schemas with operations 

    Queralt Calafat, Anna; Teniente López, Ernest (2007-04)
    External research report
    Open Access
    The purpose of validating a conceptual schema is to guarantee that it properly reflects what the user needs from an application. This task is not fully formalizable, so it is desirable to provide the designer with a set ...
  • Verification and validation of UML conceptual schemas with OCL constraints 

    Queralt Calafat, Anna; Teniente López, Ernest (2012)
    Article
    Restricted access - publisher's policy
    To ensure the quality of an information system, it is essential that the conceptual schema that represents the knowledge about its domain is semantically correct. The semantic correctness of a conceptual schema can be seen ...