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IBM Assessment: DB2 9.7 SQL Procedure Developer Sample Questions:

1. Which statement will create global variable?

A) DECLARE GLOBAL VARIABLE glob_emp_sal ANCHORE TO employee.salary
B) PUBLISH VARIABLE glob_emp_sal DECIMAL(9,2)
C) DECLARE GLOBAL VARIABLE glob_emp_sal DECIMAL(9,2)
D) CREATE VARIABLE glob_emp_sal ANCHORE TO employee.salary

2. Click the Exhibit button.

A user-defined function was created using the statement shown in the exhibit. Which additional option can be added to the CREATE FUNCTION statement to tell the optimizer that the function does not always return the same results for a given argument value?

A) STATIC DISPATCH
B) NOT FENCED
C) NO EXTERNAL ACTION
D) NOT DETERMINISTIC

3. What values are generated each time an SQL statement is executed?

A) EXCEPTION and SQLCODE
B) SQLSTATE and SQLCODE
C) SQLERRN and SQLMSG
D) SQLSTATE and EXCEPTION

4. Which code fragment illustrates the proper way to perform error checking in SQL stored procedures?

A) ... BEGIN IF SQLCODE < 0 THEN RETURN -6786 END;
B) ...
IF
EXCEPTION < 0
ELSE THEN;
NULL;
ENDIF;
...
C) ...
BEGIN
EXCEPTION < 0
ELSE;
NULL;
END;
...
D) ...
IF SQLCODE < 0 THEN
RETURN -6786;
END IF;
...

5. Which procedure demonstrates the correct use of dynamic SQL?

A) CREATE PROCEDURE update_count5 (IN new_count INTEGER, IN item_code INTEGER)
BEGIN
DECLARE v_dynSQL VARCHAR(200);
DECLARE v_col_name VARCHAR(128);
SET v_col_name = 'item_number';
SET v_dynSQL = 'UPDATE stock SET quantity_on_hand=? WHERE ?=?';
PREPARE v_stmt1 FROM v_dynSQL;
EXECUTE v_stmt1 USING new_count, v_col_name, item_code;
END
B) CREATE PROCEDURE update_count1 (IN new_count INTEGER, IN item_code INTEGER)
BEGIN
DECLARE v_dynSQL VARCHAR(200);
SET v_dynSQL = 'UPDATE stock SET quantity_on_hand=? WHERE item_number=?';
PREPARE v_stmt1 FROM v_dynSQL;
EXECUTE v_stmt1 USING new_count, item_code;
END
C) CREATE PROCEDURE update_count4 (IN tab_name VARCHAR(128), IN col_name1
VARCHAR(128), IN col_name2 VARCHAR(128), IN
new_count INTEGER, IN item_code INTEGER)
BEGIN
DECLARE v_dynSQL VARCHAR(200);
SET v_dynSQL = 'UPDATE ? SET ?=? WHERE ?=?';
PREPARE v_stmt1 FROM v_dynSQL;
EXECUTE v_stmt1 USING tab_name, col_name1, new_count, col_name2, item_code;
END
D) CREATE PROCEDURE update_count2 (IN tab_name VARCHAR(128), IN new_count
INTEGER, IN item_code INTEGER)
BEGIN
DECLARE v_dynSQL VARCHAR(200);
SET v_dynSQL = 'UPDATE ? SET quantity_on_hand=? WHERE item_number=?';
PREPARE v_stmt1 FROM v_dynSQL;
EXECUTE v_stmt1 USING tab_name, new_count, item_code;
END

Solutions: