Pu, C. 1990. The superdatabase architecture: Cooperative heterogneous transactions. Technical Report RJ 6649 (63960) (Feb.), Columbia University.  Home/Search   Document Details and Download   Summary   Related Articles

....compensate approaches to ensuring global transaction atomicity. Restricted Autonomy. Unlike the mechanism developed in this paper and the various schemes discussed above that strive to preserve local autonomy, some schemes have been developed that only preserve a restricted notion of autonomy. In [Pu 1990; Tal and Alonso 1992] the authors assume that each participating local DBMS supports a prepared state for the execution of the atomic commit protocol. Systems may, however, be following heterogeneous commit protocols. Thus, the problem of interoperability among databases reduces to designing ....

....reduces to designing appropriate gateways that translate between these heterogeneous commit protocols supported by the local DBMSs. Design of such gateways in case local DBMSs support different implementations of the two phase and three phase commit protocols [Skeen 1982] have been studied in [Pu 1990; Tal and Alonso 1992] In [Perrizo et al. 1991] the authors describe mechanisms for simulating a prepared state for local DBMSs by rerouting both the local and global transactions to a common interface which can be controlled by the MDBS software. Once the prepared state is simulated, the 2PC ....

Pu, C. 1990. The superdatabase architecture: Cooperative heterogneous transactions. Technical Report RJ 6649 (63960) (Feb.), Columbia University.

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