In the context of multidimensional databases implemented on relational DBMSs through star schemes, the most effective technique to enhance performances consists of materializing re...
Abstract. The Service Oriented Architecture paradigm, and its implementation based on Web Services, have been the object of an intense research and standardization activity. One of...
Federico Chesani, Paola Mello, Marco Montali, Paol...
Abstract. This paper focuses on the use and interpretation of approximate databases where both rough sets and indiscernibility partitions are generalized and replaced by approximat...
- In order to accomplish independence on the logical data organization, a relational DBMS must be capable of interpreting query language sentences which reference attributes belong...
In group communication, users often have different access rights to multiple data streams. Based on the access relation of users and data streams, users can form partially ordered...