/* A simplistic structure to represent the current CD, excluding the track information */struct current_cd_st {  int artist_id;  int cd_id;  char artist_name[100];  char title[100];  char catalogue[100];};/* A simplist track details structure */struct current_tracks_st {  int cd_id;  char track[20][100];};#define MAX_CD_RESULT 10struct cd_search_st {  int cd_id[MAX_CD_RESULT];};/* Database backend functions */int  database_start(char *name, char *password);void database_end();/* Functions for adding a CD */int add_cd(char *artist, char *title, char *catalogue, int *cd_id);int add_tracks(struct current_tracks_st *tracks);/* Functions for finding and retrieving a CD */int find_cds(char *search_str, struct cd_search_st *results);int get_cd(int cd_id, struct current_cd_st *dest);int get_cd_tracks(int cd_id, struct current_tracks_st *dest);/* Function for deleting items */int delete_cd(int cd_id);