Examine the following package specification.
SQL>CREATE OR REPLACE PACKAGE emp_pkf IS
PROCEDURE search_emp (empdet NUMBER);
PROCEDURE search_emp (empdet DATE);
PROCEDURE search_emp (empdet NUMBER); RETURN VERCHAR2
PROCEDURE search_emp (empdet NUMBER); RETURN DATE
END emp_pkg
/
The package is compiled successfully
Why would it generate an error at run tune?
A. Because function cannot be overload
B. Because function cannot differ only in return type.
C. Because all the functions and procedures In the package cannot have the same number of parameters with the same parameter name
D. Because the search EMP (EMPDET NUMBER) procedure and the SEARCH_DEPT (EMPDET NUMBER) cannot have identical parameter names and data types
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Also think correct answer is B:
https://docs.oracle.com/cd/B19306_01/appdev.102/b14261/subprograms.htm#i12352
“You cannot overload two functions that differ only in the datatype of the return value, even if the types are in different families. For example, you cannot overload two functions where one returns BOOLEAN and the other returns INTEGER.”