Preserving Data Integrity in HDDBSs Using Quasi Serializable Executions
Ahmed K. Elmagarmid, Weimin Du · Purdue e-Pubs (Purdue University System) · 1990
Data integrity is one Mpect of database consistency concerned with the validity of databases.Integrity requirements are expressed by means of a set of integrity constraints. A database stateis consistent (with respect to a set ofconstraints) if all these constraints are evaluated to be truein it. Anexecution preservesintegrityifit transfers a databasefrom an consistentstatetoanotherconsistent state and each transaction sees an consistent state in the execution.Database integrity is