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If your application never sends those changes back to the data source, then you are finished with the update.
If you do send the changes back to the database, then a second step is required.
However, you can also use different adapters, for example, to move data from one data source to another or to update multiple data sources.
thank you If you use visual studio and if you do debuging of the application and if you update the database, close the program and do the debug again, no changes will be made to the database, because visual studio copyies the old database to the debugging folder each time you run it.
To test that, run the application direct from the debbuging folder without the debbuger, make a change to the database, close the program and run it again, or just open the file in access to see if the changes are made. for nticaric, how i suppose to do that in windows application?
Additionally, extra columns in the source dataset are added to the target dataset.
Merging datasets is useful when you have a local dataset and you get a second dataset from another application.