rem: db_key_t keys[2] = {"user", "contact"};
add: db_key_t keys[2] = {USER_COLUMN, CONTACT_COLUMN};
context: int db_remove_contact(db_con_t* _c, contact_t* _con){	db_key_t keys[2] = {"user", "contact"};	db_val_t vals[2] = {{DB_STRING, 0, {.string_val = NULL}},			    {DB_STRING, 0, {.string_val = NULL}}	};#ifdef PARANOID	if ((!_c) || (!_con)) {		LOG(L_ERR, "db_remove_contact(): Invalid parameter value\n");		return FALSE;	}#endif	vals[0].val.string_val = _con->aor->s;	vals[1].val.string_val = _con->c.s;	if (db_delete(_c, keys, vals, 2) == FALSE) {		LOG(L_ERR, "db_remove_contact(): Error while deleting from database\n");		return FALSE;	}	return TRUE;}