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» Requirements for a Composition Language
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GPCE
2008
Springer
15 years 5 months ago
Polymorphic embedding of dsls
The influential pure embedding methodology of embedding domainspecific languages (DSLs) as libraries into a general-purpose host language forces the DSL designer to commit to a ...
Christian Hofer, Klaus Ostermann, Tillmann Rendel,...
PODS
2004
ACM
158views Database» more  PODS 2004»
16 years 4 months ago
Composing Schema Mappings: Second-Order Dependencies to the Rescue
A schema mapping is a specification that describes how data structured under one schema (the source schema) is to be transformed into data structured under a different schema (the...
Ronald Fagin, Phokion G. Kolaitis, Lucian Popa, Wa...
KR
2004
Springer
15 years 9 months ago
Parthood as Spatial Inclusion - Evidence from biomedical Conceptualizations
Modeling complex compositional objects in the field of the life sciences requires to solve intricate ontological problems, especially those related to parts of a whole, space and...
Stefan Schulz, Udo Hahn
CRYPTO
1992
Springer
156views Cryptology» more  CRYPTO 1992»
15 years 8 months ago
DES is not a Group
We prove that the set of DES permutations (encryption and decryption for each DES key) is not closed under functional composition. This implies that, in general, multiple DES-encry...
Keith W. Campbell, Michael J. Wiener
SERP
2004
15 years 5 months ago
Analysis and Metrics of XML Schema
Despite the ubiquity of XML, research in metrics for XML documents is scarce. This paper proposes and discusses eleven metrics to measure the quality and complexity of XML Schema ...
Andrew McDowell, Chris Schmidt, Kwok-bun Yue