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DBPL
2009
Springer
131views Database» more  DBPL 2009»
15 years 11 months ago
XML Security Views Revisited
In this paper, we revisit the view based security framework for XML without imposing any of the previously considered restrictions on the class of queries, the class of DTDs, and t...
Benoît Groz, Slawomir Staworko, Anne-C&eacut...
ECOOP
2007
Springer
15 years 11 months ago
Matching Objects with Patterns
Data in object-oriented programming is organized in a hierarchy of classes. The problem of object-oriented pattern matching is how to explore this hierarchy from the outside. This ...
Burak Emir, Martin Odersky, John Williams
ICALP
2004
Springer
15 years 10 months ago
An Analog Characterization of Elementarily Computable Functions over the Real Numbers
Abstract We present an analog and machine-independent algebraic characterization of elementarily computable functions over the real numbers in the sense of recursive analysis: we p...
Olivier Bournez, Emmanuel Hainry
147
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CATS
2006
15 years 6 months ago
The Busy Beaver, the Placid Platypus and other Crazy Creatures
The busy beaver is an example of a function which is not computable. It is based on a particular class of Turing machines, and is defined as the largest number of 1's that ca...
James Harland
DBPL
1993
Springer
125views Database» more  DBPL 1993»
15 years 9 months ago
Octopus: A Reflective Language Mechanism for Object Manipulation
A class of database programs exist which are required to operate over an infinite number of types; included in this class are object browsers and query tools. The types over which...
Alex Farkas, Alan Dearle