DIL data manipulation functions

/* SQL data manipulation statement with fixed input and no output. */
int db_dms(DB_Handle_t  *db, int *row_count, const char *query_string);

/* SQL data manipulation statement with variable array input and no output. */
int db_dmsv(DB_Handle_t  *dbin, int *row_count, const char *query_string, 
            int n_rows, ...);