試題詳解

QUESTION 58 Examine this package specification: CREATE OR REPLACE PACKAGE concat_all IS v_string VARCHAR2(100); PROCEDURE combine (p_num_val NUMBER); PROCEDURE combine (p_date_val DATE); PROCEDURE combine (p_char_val VARCHAR2, p_num_val NUMBER); END concat_all; / Which overloaded COMBINE procedure declaration can be added to this package specification? 空
(A) PROCEDURE combine;
(B) PROCEDURE combine (p_no NUMBER);
(C) PROCEDURE combine (p_val_1 VARCHAR2, p_val_2 NUMBER;
(D) PROCEDURE concat_all (p_num_val VARCHAR2, p_char_val NUMBER);