An object that implements the
RowSetWriter interface, called a
writer. A writer may be registered with a
RowSet object that supports the reader/writer paradigm.
If a disconnected RowSet object modifies some of its data, and it has a writer associated with it, it may be implemented so that it calls on the writer's writeData method internally to write the updates back to the data source. In order to do this, the writer must first establish a connection with the rowset's data source.
If the data to be updated has already been changed in the data source, there is a conflict, in which case the writer will not write the changes to the data source. The algorithm the writer uses for preventing or limiting conflicts depends entirely on its implementation.