A Classification of Multi-Database Languages
نویسندگان
چکیده
This paper defines a formal classification of multidatabase languages into five levels of database integration with increasing degree of global control and decreasing degree of local autonomy. First, the fundamental interoperability mechanisms are identified for each of these levels. Their consequences on local aut o n o m y as well as implementation draw-backs are discussed. Second, various multi-database languages are classified into these categories. In addition to o u r own language COOL ~, other proposals are analyzed, including SQL *Net, Multibase, Superviews, VODAK, Pegasus, and O*SQL.
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تاریخ انتشار 1994