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We investigate and compare two forms of recursion on sets for querying nested collections. The rst one is called sri and it corresponds to sequential processing of data. The second...
We describe a functional database language OR-SML for handling disjunctive information in database queries, and its implementation on top of Standard ML 12]. The core language has ...
In the relational model it has been shown that the flat relational algebra has the same expressive power as the nested relational algebra, as far as queries over flat relations ...
Wim Le Page, Jan Hidders, Philippe Michiels, Jan P...