CPU bound client puzzles have been suggested as a defense mechanism against connection depletion attacks. However, the wide disparity in CPU speeds prevents such puzzles from being...
Abstract. There is currently great interest in integrating knowledge discovery research into mainstream database systems. Such an enterprise is nontrivial because knowledge discove...
Immortal DB is a transaction time database system that is built into a commercial database system rather than being layered on top. This enables it to have performance that is very...
The aspect of security needs more consideration in the area of architectures for multidatabase systems. Particularly, the authentication of users which is a main prerequisite for ...
A context-free grammar is a single-tree grammar (STG) if every nonterminal symbol has at most one production rule whose right hand side contains nonterminal symbols. Various prope...