On Serializability of Multidatabase Transactions Through Forced Local Conflicts

The maindi culty in enforcing globalserializabilityin a multidatabase environment lies in resolving indirect (transitive) con icts between multidatabase transactions. Indirect con icts introduced by local transactions are di cult to resolve because the the behavior or even the existence of local transactions is not known to the multidatabase system. To overcome these problems, we propose to incorporate additional datamanipulationoperations in the subtransactions of each multidatabasetransaction. We show that if these operations create direct con icts between subtransactions at each participatinglocal database system, indirect con icts can be resolved even if the multidatabase system is not aware of their existence. Based on this approach we introduce a multidatabase transaction management method that requires the local database systems to ensure only local serializability. The proposed method and its re nements do not violate the autonomy of the local database systems and guarantee gl...

• Type: Conference
• Year: 1991
• Where: ICDE
• Authors: Dimitrios Georgakopoulos, Marek Rusinkiewicz, Amit P. Sheth
• Keywords: Database, Database Systems, ICDE 1991, Multidatabase Environment, Multidatabase Transactions