A Datalog program can be translated into a system of fixpoint equations of relational algebra; this paper studies how such a system can be solved and optimized for a particular qu...
The design of the POSTGRES data model is described. The data model is a relational model that has been extended with abstract data types including user-defined operators and proce...
There are several consistency control algorithms for managing replicated files in the face of network partitioning due to site or communication link failures. In this paper, we co...
A conventional transaction manager implemented by a database management system (DBMS) was compared against one implemented within an operating system (OS) in a variety of simulate...
In a context considering in a unique framework all the relations in a database, by means of the notion of global consistency, independent database schemes allow enforcement of con...