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IBM DB2 9.7 SQL Procedure Developer Sample Questions:

1. 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) ownership of the existing procedure
D) IMPLICIT_SCHEMA authority on the database

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

3. Which statement is true about the NUMBER data type?

A) Declaring a column as NUMBER(6,8) is valid both in Oracle and in DB2 provided the DB2 database was created in Oracle compatibility mode.
B) Declaring a column as NUMBER(10,-2) is valid both in Oracle and in DB2 provided the DB2 database was created in Oracle compatibility mode.
C) In DB2, the NUMBER data type has maximum precision of 31; in Oracle, it has a maximum precision of 38.
D) In DB2, the NUMBER data type is the same as in Oracle, provided the DB2 database was created in Oracle compatibility mode.

4. 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 has to retry in order to retrieve the current data.
C) 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.
D) The row will be found with a different ROW CHANGE TOKEN and Transaction 2 will overwrite the values set in transaction 1.

5. Which of the following can be done while debugging a SQL procedure with IBM Data Studio?

A) Change the order of statements being executed.
B) Re-execute the current statement.
C) Change the value of any variables used.
D) Edit the procedure and continue.

Solutions: