## Conceptual Modeling for Data Integration

**Diego Calvanese, Giuseppe De Giacomo, Domenico Lembo, Maurizio
Lenzerini, and Riccardo Rosati**
*Conceptual Modeling: Foundations and Applications - Essays in
Honor of John Mylopoulos. Volume 5600 of Lecture Notes in Computer
Science.* 2009.

The goal of data integration is to provide a uniform access to a
set of heterogeneous data sources, freeing the user from the
knowledge about where the data are, how they are stored, and how
they can be accessed. One of the outcomes of the research work
carried out on data integration in the last years is a clear
architecture, comprising a global schema, the source schema, and
the mapping between the source and the global schema. Although in
many research works and commercial tools the global schema is
simply a data structure integrating the data at the sources, we
argue that the global schema should represent, instead, the
conceptual model of the domain. However, to fully pursue such an
approach, several challenging issues are to be addressed. The main
goal of this paper is to analyze one of them, namely, how to
express the conceptual model representing the global schema. We
start our analysis with the case where such a schema is expressed
in terms of a UML class diagram, and we end up with a proposal of a
particular Description Logic, called DL-LiteA,id . We show that the
data integration framework based on such a logic has several
interesting properties, including the fact that both reasoning at
design time, and answering queries at run time can be done
efficiently.

@incollection{book-mylopoulos-2009,
title = "Conceptual Modeling for Data Integration",
year = "2009",
author = "Diego Calvanese and De Giacomo, Giuseppe and Domenico
Lembo and Maurizio Lenzerini and Riccardo Rosati",
editor = "Alex T. Borgida and Vinay Chaudhri and Paolo Giorgini and Eric
Yu",
booktitle = "Conceptual Modeling: Foundations and Applications - Essays
in Honor of John Mylopoulos",
pages = "173-197",
volume = "5600",
publisher = "Springer",
series = "Lecture Notes in Computer Science",
}

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