int is_m_seek_record(is_mtable *tab, const void *rec);
void is_m_delete_record(is_mtable *tab);
int is_m_peek_record(is_mtable *tab, void *rec);
int is_m_read_full(is_mtable *tab, is_mblock *mblock);
int is_m_seek_record(is_mtable *tab, const void *rec);
void is_m_delete_record(is_mtable *tab);
int is_m_peek_record(is_mtable *tab, void *rec);
int is_m_read_full(is_mtable *tab, is_mblock *mblock);