Improved Integrity Constraints Checking in Distributed Databases by Exploiting Local Checking

Most of the previous studies concerning checking the integrity constraints in distributed database derive simplified forms of the initial integrity constraints with the sufficiency property,since the sufficient test is known to be cheaper than the complete test and its initial integrity constraint as it involves less data to be transferred across the network and can always be evaluated at the target site(single site).Their studies are limited as they depend strictly on the assumption that an update operatio...