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Using the driver : DataDirect Bulk Load : Using a DDBulkLoad object : Specifying the bulk load operation
  

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Specifying the bulk load operation
You can specify which type of bulk load operation will be performed when a load method is called by setting the operation property using the setProperties method of the DDBulkLoad interface. The operation property accepts the following values: insert, update, delete and upsert. The default value is insert.
The following example changes the type of bulk load operation to update.
DDBulkLoad bulkLoad =
com.ddtek.jdbc.extensions.DDBulkLoadFactory.getInstance(connection);
Properties props = new Properties();
props.put("operation", "update");
bulkLoad.setProperties(props);