Topic(s):   DB2 Certification

June 19, 2007

DB2 9 Fundamentals Certification
Posted by Roger Sanders @ 01:21 PM ET | Jun 19, 2007

In my opinion, one of the best ways to prepare for the DB2 9 Fundamentals certification exam (Exam 730) is by answering sample questions that are presented in the same format that you will see when you take the certification exam. Every two weeks, in this section, you will find new sample questions, along with comprehensive answers for every question. (It’s not enough to know which answer is correct; it’s also important to know why the answer is correct and why the other choices are wrong!)

All of the questions presented here were developed by analyzing the final set of questions that were chosen for the DB2 9 Fundamentals certification exam (Exam 730). (I was a member of the team that developed the DB2 9 Fundamentals certification exam so I had access to every question!)

These questions are taken from my book DB2 9 Fundamentals Certification Study Guide, published by MC Press, and are reprinted here with permission.

I hope you find this material helpful.

Roger E. Sanders

Question 1:

Which authority or privilege is granted by the DB2 Database Manager configuration file?

A. CONNECT
B. CONTROL
C. SYSMAINT
D. EXECUTE

Answer 1:

The correct answer is C. The instance-level authorities available (SYSADM, SYSCTRL, SYSMAINT, and SYSMON) can only be given to a group of users and the names of the groups that have been given these authorities are recorded in the DB2 Database Manager configuration files that are associated with each instance.

Question 2:

If the following SQL statements are executed in the order shown:

CREATE TABLE orders
(order_num INTEGER NOT NULL,
buyer_name VARCHAR(35),
amount NUMERIC(5,2));

CREATE UNIQUE INDEX idx_orderno ON orders(order_num);

Which of the following describes the resulting behavior?

A. Every ORDER_NUM value entered must be unique; whenever the ORDERS table is queried rows should be displayed in order of increasing ORDER_NUM values
B. Every ORDER_NUM value entered must be unique; whenever the ORDERS table is queried rows will be displayed in no particular order
C. Duplicate ORDER_NUM values are allowed; no other index can be created for the ORDERS table that reference the ORDER_NUM column
D. Every ORDER_NUM value entered must be unique; no other index can be created for the ORDERS table that reference the ORDER_NUM column


Answer 2:

The correct answer is A. If the UNIQUE clause is specified when the CREATE INDEX statement is executed, rows in the table associated with the index will not have two or more occurrences of the same values in the set of columns that make up the index key. Furthermore, the creation of an index provides a logical ordering of the rows of a table so in this example, rows inserted into the ORDERS table will be ordered by ORDER_NUM values, in ascending order.

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