We consider a generalization of Kildall's lattice theoretic approach to data flow analysis, which we call monotone data flow analysis frameworks. Many flow analysis problems which appear in practiceâ€¦ (More)

Kildall has developed data propagation algorithms for code optimization in a general lattice theoretic framework. In another direction, Hecht and Ullman gave a strong upper bound on the number ofâ€¦ (More)

In attempting to solve the problems of data security, researchers, and practititioners are placing increasing emphasis on encryption. An important class of encryption schemes is that ofâ€¦ (More)

A new cryptosystem that is suitable for database encryption is presented. The system has the important property of having subkeys that allow the encryption and decryption of fields within a record.â€¦ (More)

Considered here, for a particular model of databases in which only information about relatively large sets of records can be obtained, is the question of whether one can from statistical informationâ€¦ (More)

Intuitively, the lattice elements .,. represent information which might be known about data at entrance to some block of a flow graph, and F represents the set of transformations on this informationâ€¦ (More)

In this paper, we are going to examine the problem of optimal file allocation In arbitrary computer networks This problem has been shown to be NP-complete [CHAHD76, ESWAR74] Several authors TCHU69,â€¦ (More)

Data outsourcing has become a trend in the information technology industry because it offers scalability to the enormous amount of digital content stored and generated on a daily basis by individualsâ€¦ (More)