Semantic integrity enforcement in centralized DBMS and distributed DBMS based on slow (geographically distributed) and fast (local area) networks

In this paper we investigate techniques for decreasing the overhead of semantic integrity enforcement or equivalently the overhead of transaction validation with respect to a set of semantic integrity (SI) assertions. We discuss the problem of semantic integrity enforcement from two points of view. First we describe three approaches to decrease the overhead of SI enforcement. Second we analyze the cost of several SI enforcement methods in centralized and distributed database systems based on slow and fast (local) networks.