| 摘要 |
A system and method for migrating an application developed around an ISAM database server to an SQL database server without source level changes. A database driver translates calls made to the ISAM database server from the application into SQL statements that work with the SQL database server. Whether the SQL database server is an MS SQL server or any other database server, e.g. an Oracle server, a database migration tool replaces existing dynamic link libraries of the ISAM database server, and the database driver effectively intercepts and relays application commands to the SQL database server as optimized, efficient SQL statements.
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