extern DbRecord DbRecord_base;
extern int DbRecord_discard(DbRecord *);
extern int DbRecord_init(const DBT *, const DBT *, DbRecord *);
extern void DbRecord_print(DbRecord *, FILE *);
extern int DbRecord_read(u_long, DbRecord *);
extern int DbRecord_search_field_name(char *, char *, OPERATOR);
extern int DbRecord_search_field_number(u_int, char *, OPERATOR);
extern int compare_double(DB *, const DBT *, const DBT *);
extern int compare_string(DB *, const DBT *, const DBT *);
extern int compare_ulong(DB *, const DBT *, const DBT *);
extern int csv_env_close(void);
extern int csv_env_open(const char *, int);
extern int csv_secondary_close(void);
extern int csv_secondary_open(void);
extern int entry_print(void *, size_t, u_int32_t);
extern int field_cmp_double(void *, void *, OPERATOR);
extern int field_cmp_re(void *, void *, OPERATOR);
extern int field_cmp_string(void *, void *, OPERATOR);
extern int field_cmp_ulong(void *, void *, OPERATOR);
extern int input_load(input_fmt, u_long);
extern int query(char *, int *);
extern int query_interactive(void);
extern int secondary_callback(DB *, const DBT *, const DBT *, DBT *);
extern int strtod_err(char *, double *);
extern int strtoul_err(char *, u_long *);