A Classification of Multi-Database Languages (1994) [4 citations — 2 self]
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author = {Markus Tresch and Marc H. Scholl},
title = {A Classification of Multi-Database Languages},
booktitle = {In Proc. 3rd Int'l Conf. on Parallel and Distributed Information Systems (PDIS},
year = {1994},
publisher = {IEEE Computer Society Press}
}
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Abstract:
This paper defines a formal classification of multi-database languages into five levels of database integration with increasing degree of global control and decreasing degree of local autonomy. First, the fundamental interoperability concepts and mechanisms are identified for each of these levels. Their consequences on local autonomy as well as implementation draw-backs are discussed. Second, various multi-database languages are classified into these categories. In addition to our own language COOL*, other proposals are analyzed, including SQL*Net, Multibase, Superviews, VODAK, Pegasus, and O*SQL. Keywords: federated database systems, multi-databases languages, object algebra, views, object unification, object identity, autonomy. 1 Introduction Novel data-intensive information systems are characterized by cooperating (autonomous and heterogeneous) database systems and therefore increasingly require openness of database management systems (DBMSs) for a cooperation with other services,...
