A CLASS LATTICE BASED TRANSACTION MODEL FOR OBJECT-ORIENTED DATABASES

摘要

Transaction processing has long been recognized commonly as not only an advanced, but also a difficult topic by database community. The transaction models for existing object-oriented databases(OODBs) are almost all extensions to, or borrowed from traditional transaction models. They captures only a few characteristics of OODBs. Our contributions in this paper are three aspects.First, we take a new look at the relationship between database and its transaction processing. A database is viewed as an object's structure, and its transaction processing system as the method of this object. Second,we present a transaction model for an OODB-GOODbase,which is being developed by us on SUN workstation.The idea of this model can be applied generally to other OODBs. Third, we distinguish two kinds of concurrency in our model, namely, extra-and intra-object parallelisms. Some implementation issues are also considerated here.