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IBM C2090-730 Exam Syllabus Topics:

IBM DB2 9 Family Fundamentals Sample Questions:

Question 1

Given the following tables:
TABLEA
EMPIDNAME
1 USER1 2 USER2
TABLEB
EMPID WEEKNO PAYAMT
1 1 1000.00
1 2 1000.00
2 1 2000.00
and the fact that TABLEB was defined as follows:
CREATE TABLE tableb (empid SMALLINT,
weekno SMALLINT,
payamt DECIMAL(6,2),
CONSTRAINT const1 FOREIGN KEY (empid)
REFERENCES tablea(empid)
ON DELETE NO ACTION)
If the following command is issued:
DELETE FROM tablea WHERE empid=2
How many rows will be deleted from TABLEA and TABLEB?

A. TABLEA - 0, TABLEB - 0
B. TABLEA - 0, TABLEB - 1
C. TABLEA - 1, TABLEB - 0
D. TABLEA - 1, TABLEB - 1

Question 2

Given the following table definitions:
EMPLOYEES
EMPID INTEGER
NAME CHAR(20)
DEPTID CHAR(3)
SALARY DECIMAL(10,2)
COMMISSION DECIMAL(8,2)
DEPARTMENTS
DEPTNO INTEGER DEPTNAME CHAR(20)
Which of the following statements will produce a result data set that satisfies all of these conditions:
> Displays the total number of employees in each department >> Displays the corresponding department name for each department ID >> Sorted by department employee count, from greatest to least

A. SELECT *,COUNT(empno) FROM departments, employees WHERE deptid = deptno GROUP BY deptname ORDER BY 2 DESC
B. SELECTdeptname, COUNT(empno) FROM departments, employees WHERE deptid = deptno GROUP BY deptname ORDER BY 2 ASC
C. SELECTdeptname, COUNT(*) FROM departments, employees WHERE deptid = deptno GROUP BY deptname ORDER BY 2
D. SELECTdeptname, COUNT(empno) FROM departments, employees WHERE deptid = deptno GROUP BY deptname ORDER BY 2 DESC

Question 3

Given the following query:
SELECT quantity,
CASE WHEN itemcode = '099' THEN 'SILVER'
WHEN itemcode = '788' THEN 'GOLD'
WHEN itemcode = '899' THEN 'PLATINUM'
ELSE 'ERROR'
END
FROM supplier
What will be the result of the query if the following data is evaluated by the CASE expression?
SUPPLIER
QUANTITY ITEMCODE 3 099 4 099 1 788 1 899 5 009 3 788 1 899

A. 3,SILVER 4,SILVER 1,GOLD 1,PLATINUM 5,ERROR 3,GOLD 1,PLATINUM
B. 3,SILVER 4,SILVER 1,GOLD 1,GOLD 5,SILVER 3,ERROR 1,PLATINUM
C. 3,SILVER 4,GOLD 1,SILVER 1,GOLD 5,PLATINUM 3,SILVER 1,GOLD
D. 3,SILVER 4,SILVER 1,PLATINUM 1,ERROR 5,SILVER 3,GOLD 1,PLATINUM

Question 4

If an application issues the same query more than once in the same Unit of Work, which isolation level will not permit this application to see additional rows inserted by other applications?

A. Cursor Stability (CS)
B. Uncommitted Read (UR)
C. Read Stability (RS)
D. Repeatable Read (RR)

Question 5

Application A holds an Update lock on a single row and application B is trying to read that row. If both applications are using isolation level UR, which of the following will occur?

A. Application A will be terminated so that application B can read the row.
B. Application B will wait until applicationA releases the Update lock.
C. Application B will read the row.
D. Applications A and B will cause a deadlock situation.

Solutions: