Author(s):  
Mirella M. Moro ◽  
Lipyeow Lim ◽  
Yuan-Chi Chang

It is well known that XML has been widely adopted for its flexible and self-describing nature. However, relational data will continue to co-exist with XML for several different reasons one of which is the high cost of transferring everything to XML. In this context, data designers face the problem of modeling both relational and XML data within an integrated environment. This chapter highlights important questions on hybrid XML-relational database design and discusses use cases, requirements, and deficiencies in existing design methodologies especially in the light of data and schema evolution. The authors’ analysis results in several design guidelines and a series of challenges to be addressed by future research.


1994 ◽  
Vol 6 (2) ◽  
pp. 71-84 ◽  
Author(s):  
James Bradley

Relational database design methodologies have recently been promoted for providing historians with a useful way of organising data within databases. This paper explores some of the problems which arise from using these methodologies, but suggests that techniques like Entity-Relationship Modelling remain intuitive and natural ways of coping with the complexities of historical data.


1987 ◽  
Vol 75 (5) ◽  
pp. 533-546 ◽  
Author(s):  
S. Ceri ◽  
B. Pernici ◽  
G. Wiederhold

Author(s):  
Morad Hajji ◽  
Mohammed Qbadou ◽  
Khalifa Mansouri

Ontologies are spreading more and more in the field of information technologies as a privileged solution allowing the formalization of knowledge. The theoretical model of ontologies is most promising. They are increasingly ubiquitous given the benefits they present. Despite the proliferation of research proposing approaches dedicated to the design of a database from an ontology, the tools to design a database from an ontology are rare or inaccessible. Thus, in this contribution, we present our approach for the development of an Eclipse Plug-in, in order to automatically generate a conceptual model of a relational database from an ontology. To evaluate the usefulness of our approach, we used our resulting Eclipse Plug-in to automatically generate a conceptual model of a relational database from an ontology, customize it, and automatically generate the corresponding SQL script for Data Definition. The results of this experiment showed that our Plug-in constitutes a concretization of our approach and a means of automatic translation from the ontological model to the relational model.


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