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IBM DB2 9 Family Fundamentals Sample Questions:

1. Given the following table definition:
SALES
INVOICE_NO CHAR(20) NOT NULL
SALES_DATE DATE
SALES_PERSON VARCHAR(25)
REGION CHAR(20)
SALES_AMT DECIMAL(9,2)
Which of the following queries will return SALES information, sorted by SALES_PERSON, from A
to Z, and SALES_DATE, from most recent to earliest?

A) SELECTinvoice_no, sales_person, sales_date, sales_amt FROM sales SORT BY sales_person, sales_date DESC
B) SELECTinvoice_no, sales_person, sales_date, sales_amt FROM sales SORT BY sales_person DESC, sales_date
C) SELECTinvoice_no, sales_person, sales_date, sales_amt FROM sales ORDER BY sales_person, sales_date DESC
D) SELECTinvoice_no, sales_person, sales_date, sales_amt FROM sales ORDER BY sales_person DESC, sales_date

2. If the following SQL statements are executed:
CREATE TABLE make (makeid SMALLINT NOT NULL PRIMARY KEY,
make VARCHAR(25));
CREATE TABLE model (modelid SMALLINT,
model VARCHAR(25),
makeid SMALLINT,
CONSTRAINT const1 FOREIGN KEY (makeid)
REFERENCES make(makeid) ON DELETE RESTRICT);
And each table created is populated as follows:
MAKE
MAKEID MAKE
1 Ford 2 Chevrolet 3 Toyota
MODEL
MODELID MODEL MAKEID
1 Mustang 1 2 Escort 1 3 Malibu 2 4 Camry 3
If the following SQL statement is executed:
DELETE FROM make WHERE makeid = 1
What is the total number of rows that will be deleted?

A) 0
B) 1
C) 3
D) 2

3. Which of the following is true about XML columns?

A) XML columns are used to store XML documents as a hierarchical set of entities
B) In order to access any portion of an XML document stored in an XML column, the entire document must be retrieved
C) OnlyXQuery can be used to retrieve an XML document from an XML column
D) XML columns must be altered to accommodate additional parent/child relationships if they are used in referential constraints

4. A user wishing to invoke an SQL stored procedure that queries a table must have which of the following privileges?

A) CALL privilege on the procedure; SELECT privilege on the table
B) EXECUTE privilege on the procedure; REFERENCES privilege on the table
C) EXECUTE privilege on the procedure; SELECT privilege on the table
D) CALL privilege on the procedure; REFERENCES privilege on the table

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

Solutions: