This paper is on the Consensus problem, in the context of asynchronous distributed systems made of n processes, at most f of them may crash. A family of failure detector classes s...
Testing an SQL database system by running large sets of deterministic or stochastic SQL statements is common practice in commercial database development. However, code defects oft...
In recent years, OLAP technologies have become one of the important applications in the database industry. In particular, the datacube operation proposed in [5] receives strong at...
We present protocols that allow a user Alice, knowing only her name and password, and not carrying a smart card, to "log in to the network" from a "generic" wo...
The Internet and the World Wide Web provide a global virtual marketplace. However, there is little information about the behavior of e-commerce users worldwide. The goal of the pa...
Virgilio Almeida, Wagner Meira Jr., Victor F. Ribe...