Multidatabase system implementation on CORBA

Dogac A., Dengi C., Kilic E., Ozhan G., Ozcan F., Nural S., ...More

Proceedings of the 1996 6th International Workshop on Research Issues in Data Engineering, RIDE, New Orleans, LA, USA, 26 - 27 February 1996, pp.2-11 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • City: New Orleans, LA, USA
  • Page Numbers: pp.2-11
  • Middle East Technical University Affiliated: Yes


METU INteroperable DBMS (MIND) is a multidatabase system based on OMG's distributed object management architecture. It is implemented on top of a CORBA compliant ORB, namely, DEC's ObjectBroker. In MIND all local databases are encapsulated in a generic database object. The interface of the generic database object is defined in CORBA IDL and multiple implementations of this interface, one for each component DBMSs, namely, Oracle 7, Sybase, Adabas D and MOOD are provided. MIND provides its users a common data model and a single global query language based on SQL. The main components of MIND are a global query manager, a global transaction manager, a schema integrator, interfaces to supported database systems and a graphical user interface. The integration of export schemas is currently performed by using an object definition language (ODL) which is based on OMG's interface definition language. MIND global query optimizer aims at maximizing the parallel execution of the intersite operations of the global subqueries. Through MIND global transaction manager, the serializable execution of the global transactions (both nested and flat) is provided.