Now showing items 1-16 of 16

    • Acceso integrado a bases de datos heterogeneas 

      Saltor Soler, Félix Enrique (Asociación de Técnicos de Informática, 1991-04)
      Article
      Open Access
    • BASES DE DADES AVANÇADES (Examen 1r quadrim.) 

      Saltor Soler, Félix Enrique (Universitat Politècnica de Catalunya, 2002-01-24)
      Exam
      Restricted access to the UPC academic community
    • Discriminated operations for interoperable databases 

      García Solaco, Manuel Alberto; Saltor Soler, Félix Enrique (Institute of Electrical and Electronics Engineers (IEEE), 1991)
      Conference report
      Open Access
      Federation Rules to be followed when associating external schemas into federated schemas are formulated. Discriminated operations in an object oriented model, such as discriminated generalization, and in the relational ...
    • Extraction of data dependencies 

      Castellanos Vázquez, M. Guadalupe; Saltor Soler, Félix Enrique (1993-02)
      External research report
      Open Access
      Relational database schemas must be semantically enriched to reflect knowledge about the data, as needed by many applications. One technique is the analysis of the database extension, extracting existing data dependencies. ...
    • Information system architecture for secure data warehousing 

      Abelló Gamazo, Alberto; Oliva, M; Samos, J; Saltor Soler, Félix Enrique (2000-04)
      External research report
      Open Access
      This paper is devoted to Secure Data Warehousing architecture and its data schemas. We relate a federated databases architecture to Data Warehouse schemas, which allows us to provide better understanding to the characteristics ...
    • La opinión de los usuarios 

      Camps Paré, Rafael; Saltor Soler, Félix Enrique (Asociación de Técnicos de Informática, 1976-09)
      Article
      Open Access
    • Multi-star conceptual schemas for OLAP systems 

      Abelló Gamazo, Alberto; Samos, J; Saltor Soler, Félix Enrique (2001-10)
      External research report
      Open Access
      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 ...
    • On architectures for federated DB systems 

      Saltor Soler, Félix Enrique; Campderrich, Benet; García Solaco, Manuel Alberto (1994-02)
      External research report
      Open Access
      Different architectures for federated database systems have been proposed. We present three federation rules, analogous to the rules for fragmentation in distributed databases, and show that the reference architecture by ...
    • On schema and functional architectures for multilevel secure and multiuser model federated DB systems 

      Rodríguez Carbonell, Enric; Oliva, M.; Saltor Soler, Félix Enrique; Campderrich, B. (1997-07-02)
      External research report
      Open Access
      This paper presents an approach for tightly federated database systems with several federated schemas that consists of a schema architecture and a functional architecture. The reference schema architecture has been ...
    • On schema and functional architectures for multilevel secure and multiuser model federated DB systems 

      Rodríguez González, María Elena; Oliva, Marta; Saltor Soler, Félix Enrique; Campderrich, Benet (1997-07)
      External research report
      Open Access
      This paper presents an approach for tightly federated database systems with several federated schemas that consists of a schema architecture and a functional architecture. The reference schema architecture has been extended ...
    • Searching spatial sense in the ontological world: discovering spatial objects 

      Morocho Zurita, Villie; Pérez Vidal, Lluís; Saltor Soler, Félix Enrique (2004-05)
      External research report
      Open Access
      The search of semantic understanding in information systems has led us to take advantage from fields like Natural Language processing from the Artificial Intelligence. This is the case of ontologies which have been used ...
    • Semantic integration on spatial databases: SIT-SD prototype 

      Morocho, Villie; Pérez Vidal, Lluís; Saltor Soler, Félix Enrique (2003)
      Conference report
      Open Access
      Progress on data integration has come to the point that we must deal with the need of semantic integration. ln this work we present a prototype of an integration tool of information sources (Semantic lntegration Tool for ...
    • Sistema cooperativo para la integración de fuentes heterogéneas de información y almacenes de datos 

      Samos, J; Abelló Gamazo, Alberto; Oliva, M; Rodríguez González, María Elena; Saltor Soler, Félix Enrique; Sistac Planas, Jaume; Araque, F; Delgado, C; Garvi, E; Ruiz, E (Asociación de Técnicos de Informática, 1999-11)
      Article
      Open Access
      En este trabajo se presenta nuestra propuesta de creación de un prototipo de sistema cooperativo para la integración de fuentes heterogéneas de información y almacenes de datos en el cual se centran actualmente nuestras ...
    • The development of semantic concepts in the BLOOM model using an object metamodel 

      Castellanos Vázquez, M. Guadalupe; Saltor Soler, Félix Enrique; García Solaco, Manuel Alberto (1991-07)
      External research report
      Open Access
      An object metamodel, based on four levels in the classification/instantiation dimension, is presented. The metaclass level is what characterizes models, including their behaviour. Using this metamodel, an object oriented ...
    • The syntax of BLOOM99 schemas 

      Abelló Gamazo, Alberto; Oliva, M; Rodríguez González, María Elena; Saltor Soler, Félix Enrique (1999-10)
      External research report
      Open Access
      The BLOOM (BarceLona Object Oriented Model) data model was developed to be the Canonical Data Model (CDM) of a Federated Database Management System prototype. Its design satisfies the features that a data model should ...
    • YAM2 (Yet Another Multidimensional Model): an extension of UML 

      Abelló Gamazo, Alberto; Samos, J; Saltor Soler, Félix Enrique (2001-10)
      External research report
      Open Access
      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, ...