Modeling and Managing Uncertainty in Concurrent Database Transactions

In this paper, we provide preliminary results on the emerging problem of modeling and managing uncertainty in concurrent database transactions. This work thus completes several previous studies that, by the contrary, have not considered the specific case of concurrent transactions, which may worse the uncertainty of database management activities beyond to the simplest case of isolated transactions. Indeed, as we demonstrate in this paper, inconsistency tolerance of integrity management, constraint checking and repairing easily scales up to concurrent transactions in a natural way, and query answering in concurrent transactions over uncertain data remains certain in the presence of uncertainty.