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IBM Assessment: DB2 9.7 SQL Procedure Developer Sample Questions:

Question 1

Using Optimistic Locking, both Transaction 1 and Transaction 2 have read the same row including the RID_BIT and ROW CHANGE TOKEN values. Transaction 1 updates the row after ensuring that the row has not changed after the previous SELECT by adding a RID_BIT and ROW CHANGE TOKEN predicate to the UPDATE statement. Transaction 2 now tries to update that same row using the same predicate as transaction 1. What will be the result?

A. The row will be found with the same ROW CHANGE TOKEN. Transaction 2 will now insert its values replacing those of transaction 1.
B. The row will not be found because the value of the ROW CHANGE TOKEN has changed in regard to the UPDATE of transaction 1. Transaction 2 will complete with an insert of a new row.
C. The row will be found with a different ROW CHANGE TOKEN and Transaction 2 will overwrite the values set in transaction 1.
D. The row will not be found because the value of the ROW CHANGE TOKEN has changed in regard to the UPDATE of transaction 1. Transaction 2 has to retry in order to retrieve the current data.

Question 2

Which of the following CURSOR declare statement is incorrect?

A. DECLARE c1 ASENSITIVE CURSOR WITH RETURN TO CLIENT FOR SELECT * FROM tab1
B. DECLARE c1 INSENSITIVE CURSOR WITH RETURN TO CLIENT FOR SELECT * FROM tab1
C. DECLARE c1 CURSOR WITHOUT RETURN FOR SELECT * FROM tab1
D. DECLARE c1 SENSITIVE CURSOR WITH RETURN TO CLIENT FOR SELECT * FROM tab1

Question 3

Which of the following statements is true for declared global temporary tables?

A. When a session terminates, all declared global temporary tables created in the session are dropped.
B. Declared temporary tables support LONG VARCHAR columns.
C. Declared global temporary table descriptions are stored in the system catalog
D. Declared global temporary tables are persistent and can be shared with multiple sessions.

Question 4

When considering authorization for CREATE OR REPLACE PROCEDURE statements, the authorization id must have:

A. DBADM authority
B. group privileges on the table or view specified in the procedure
C. IMPLICIT_SCHEMA authority on the database
D. ownership of the existing procedure

Question 5

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

Solutions: