IT Interview Questions

1. Only one
2. All that apply
3. All referenced
4. None

1. Statement and Row
2. Statement only
3. Row only
4. Oracle Forms trigger

CREATE OR REPLACE FUNCTION get_budget(v_studio_id IN NUMBER)
RETURN number IS
 
v_yearly_budget NUMBER;
 
BEGIN
       SELECT  yearly_budget
       INTO            v_yearly_budget
       FROM            studio
       WHERE   id = v_studio_id;
 
       RETURN v_yearly_budget;
END;

Which set of statements will successfully invoke this function within SQL*Plus?

1. VARIABLE g_yearly_budget NUMBER
   EXECUTE g_yearly_budget := GET_BUDGET(11);
2. VARIABLE g_yearly_budget NUMBER
   EXECUTE :g_yearly_budget := GET_BUDGET(11);
3. VARIABLE :g_yearly_budget NUMBER
   EXECUTE :g_yearly_budget := GET_BUDGET(11);
4. VARIABLE g_yearly_budget NUMBER
   :g_yearly_budget := GET_BUDGET(11);

CREATE OR REPLACE PROCEDURE update_theater
(v_name IN VARCHAR v_theater_id IN NUMBER) IS
BEGIN
       UPDATE  theater
       SET             name = v_name
       WHERE   id = v_theater_id;
END update_theater;

When invoking this procedure, you encounter the error:

ORA-000: Unique constraint(SCOTT.THEATER_NAME_UK) violated.

How should you modify the function to handle this error?

1. An user defined exception must be declared and associated with the error code and handled in the EXCEPTION section.
2. Handle the error in EXCEPTION section by referencing the error code directly.
3. Handle the error in the EXCEPTION section by referencing the UNIQUE_ERROR predefined exception.
4. Check for success by checking the value of SQL%FOUND immediately after the UPDATE statement.

CREATE OR REPLACE PROCEDURE calculate_budget IS
v_budget        studio.yearly_budget%TYPE;
BEGIN
       v_budget := get_budget(11);
       IF v_budget < 30000
    THEN
               set_budget(11,30000000);
       END IF;
END;

You are about to add an argument to CALCULATE_BUDGET. What effect will this have?

1. The GET_BUDGET function will be marked invalid and must be recompiled before the next execution.
2. The SET_BUDGET function will be marked invalid and must be recompiled before the next execution.
3. Only the CALCULATE_BUDGET procedure needs to be recompiled.
4. All three procedures are marked invalid and must be recompiled.

1. RAISE_ERROR
2. SQLERRM
3. RAISE_APPLICATION_ERROR
4. RAISE_SERVER_ERROR

1. ALTER TRIGGER check_theater ENABLE;
2. ENABLE TRIGGER check_theater;
3. ALTER TABLE check_theater ENABLE check_theater;
4. ENABLE check_theater;

CREATE OR REPLACE TRIGGER prevent_gross_modification
{additional trigger information}
BEGIN
       IF TO_CHAR(sysdate, DY) = MON
  THEN
  RAISE_APPLICATION_ERROR(-20000,Gross receipts cannot be deleted on Monday);
       END IF;
END;

This trigger must fire before each DELETE of the GROSS_RECEIPT table. It should fire only once for the entire DELETE statement. What additional information must you add?

1. BEFORE DELETE ON gross_receipt
2. AFTER DELETE ON gross_receipt
3. BEFORE (gross_receipt DELETE)
4. FOR EACH ROW DELETED FROM gross_receipt

CREATE OR REPLACE FUNCTION set_budget
(v_studio_id IN NUMBER, v_new_budget IN NUMBER) IS
BEGIN
       UPDATE  studio
       SET             yearly_budget = v_new_budget
       WHERE   id = v_studio_id;
 
       IF SQL%FOUND THEN
               RETURN TRUEl;
       ELSE
               RETURN FALSE;
       END IF;
 
       COMMIT;
END;

Which code must be added to successfully compile this function?

1. Add RETURN right before the IS keyword.
2. Add RETURN number right before the IS keyword.
3. Add RETURN boolean right after the IS keyword.
4. Add RETURN boolean right before the IS keyword.

1. Altering the argument list of one of the package constructs
2. Any change made to one of the package constructs
3. Any SQL statement change made to one of the package constructs
4. Removing a local variable from the DECLARE section of one of the package constructs