contestada

Which of the following initializes the variable order?

a. DECLARE
order NUMBER(2) =: 0;
departure DATE;
BEGIN
---- executable statements ---
END;
b. DECLARE
order NUMBER(2);
departure DATE;
BEGIN
---- executable statements ---
END;
c. DECLARE
order NUMBER(2) = 0;
departure DATE;
BEGIN
---- executable statements ---
END;
d. DECLARE
order NUMBER(2) := 0;
departure DATE;
BEGIN
---- executable statements ---
END;

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