db_result
extern db_result *db_first_entry(char *, int, nis_attr *);
extern db_result *db_next_entry(char *, db_next_desc *);
extern db_result *db_reset_next_entry(char *, db_next_desc *);
extern db_result *db_list_entries(char *, int, nis_attr *);
extern db_result *db_add_entry(char *, int, nis_attr *, entry_obj *);
extern db_result *db_remove_entry(char *, int, nis_attr *);
extern void db_free_result(db_result *);
typedef struct db_result db_result;