| 摘要 |
The present invention relates to a method and system for using an external program to generate and update statistical information used by a database optimizer for at least one of a database and a database management system, at least one table of data being replicated from the database to the external program, the external program generating statistical information on the replicated data and sending the generated statistical information back to the database for use with the optimizer. The replicated data residing with the external program may also be used by an application for the execution of database queries instead of the database itself with the application using a list of replicated tables or replicated data to determine where to target its queries.
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