: Due to technological advances, wireless personal digital assistants (PDAs) are becoming quite popular. However, it seems as if none of the existing applications fully exploits th...
Ralf Salomon, Holger Harms, Frank Reichenbach, Tho...
Most relational query optimizers make use of information about the costs of accessing tuples and data structures on various storage devices. This information can at times be off b...
I report briefly on some of my own work in each of these areas and elucidate some of the questions that this research has raised. Then I propose as a research agenda the developme...
Abstract. We study privacy guarantees for the owner of an information system who wants to share some of the information in the system with clients while keeping some other informat...
In conventional security systems, protected resources such as documents, hardware devices and software applications follow an On/Off access policy. On, allows to grant access and ...