JOINed table are almost always read only. One of the workaround to this is to send direct queries (update) to the database and refresh the recordset.

>I have to tables that are related with one field
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>So i make join with the two tables and bind the resulting cursor to the datagrid, my problem is that if I try to change the value of a field in the grid and update, i get an error.
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>Is there a way to solve this problem.
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>The database i use is Access, and if you do that in access it works fine, why in the datagrid doesn't?