#include <db.h>
DB_MULTIPLE_WRITE_NEXT(void *pointer, DBT *dbt, void *data, 
    size_t dlen); 
      Appends a data item to the bulk buffer.
The pointer parameter is a variable that must have been initialized by a call to DB_MULTIPLE_WRITE_INIT.
This parameter is set to NULL if the data item does not fit in the buffer.
The dbt parameter is a DBT structure initialized with DB_MULTIPLE_WRITE_INIT.