Apparatus and method for passing statements to foreign databases

Details Apparatus and method for passing statements to foreign databases Apparatus and method for passing statements to foreign databases

1997-06-23

2000-03-21

Geckil, Mehmet B.

Electrical computers and digital processing systems: multicomput

Distributed data processing

Client/server

709245, 709246, 709217, G06F 1516

Patent

active

060413441

ABSTRACT:
An apparatus and method for accessing foreign processes in a heterogeneous database environment includes a local database server having heterogeneous services to selectively send foreign operations to the appropriate foreign processes in a controllable manner. A client application sending a statement to the local database server is checked by the local server to determine if the statement includes a reference to a foreign database system. The heterogeneous services selectively outputs a the foreign request to an agent process in communication with the foreign database system via an Application Programming Interface (API), where a foreign database driver corresponding to the foreign database maps the request from the API to the format of the foreign database. The local database server selectively allocates memory space for expected results from the foreign database, and completes execution of the statement upon receiving the expected results from the agent process. Hence, the agent process efficiently manages client statements having expressions to be processed by a foreign database system.

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