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| Section | Weight | Objectives |
|---|---|---|
| Working with DB2 Data Using SQL | 23.5% | - Sorting, Grouping, and Joining Data - DML Statements: SELECT, INSERT, UPDATE, DELETE - SQL Functions and Expressions - Transaction Isolation Levels |
| Data Concurrency | 13% | - Avoiding Lock Contention - Concurrency Control - Isolation Levels and Their Impact - Locking Mechanisms |
| Working with Databases and Database Objects | 17% | - Schemas, Tables, Views, Indexes, Constraints - Connecting to DB2 Servers and Databases - Data Types and XML Support - DDL Statements |
| DB2 Security | 16.5% | - Privileges and Authorities - Role-Based Access Control - Data Protection and Auditing - Authentication and Authorization |
| Planning | 14% | - DB2 Editions and Packaging - DB2 Tools and Utilities - Database Workloads: OLTP vs Data Warehousing - Security and Access Control Basics |
| DB2 Installation and Configuration | 16% | - Configuration Parameters - Installation Requirements and Procedures - Connectivity Setup - Instance and Database Configuration |
1. A DBA has been asked to create a table which will contain a substantial amount of detailed sales information for each calendar month and maintain it to contain only the last 12 months. Which of the following methods will facilitate the online removal of the oldest month's data?
A) Create an MQT that selects the oldest month of data with the REFRESH IMMEDIATE option.
B) Create a single table, extract the data to be retained using UNLOAD with a SELECT statement, drop and re-create the table then load only the data to be retained.
C) Create a range partitioned table, partitioned by month, and use the ALTER TABLE statement to detach the oldest month and attach storage for new data.
D) Create 12 separate tables, create a view based on all 12, drop the table with the oldest month's data then drop and re-create the view.
2. If application A issues the following SQL statement, which of the following statements about concurrency is true?
SELECT deptno, deptname, mgrno FROM dept WHERE admrdept = 'A00' FOR READ ONLY WITH RS
A) Results produced by re-execution of the statement by application A will not be affected by other applications.
B) Application A can see uncommitted changes made by other applications.
C) Rows accessed by application A can be seen by other applications.
D) Rows accessed by application A cannot be seen by other applications.
3. Given the following tables:
YEAR_2006
EMPID NAME
1 Jagger, Mick 2 Richards, Keith 3 Wood, Ronnie 4 Watts, Charlie 5 Jones, Darryl 6 Leavell, Chuck
YEAR_1962
EMPID NAME
1 Jagger, Mick 2 Richards, Keith 3 Jones, Brian 4 Wyman, Bill 5 Watts, Charlie 6 Stewart, Ian
If the following SQL statement is executed, how many rows will be returned?
SELECT name FROM year_2007 UNION ALL SELECT name FROM year_1962
A) 12
B) 9
C) 6
D) 10
4. Which of the following is a valid DB2 data type?
A) INTERVAL
B) BYTE
C) NUM
D) NUMBER
5. Given the following two tables:
TAB1 C1 C2
A 11 B 12 C 13 TAB2 CX CY
A 21 C 22 D 23
The following results are desired:
C1 C2 CX CY A 11 A 21 C 13 C 22 -- -- D 23
Which of the following queries will yield the desired results?
A) SELECT * FROM tab1 LEFT OUTER JOIN tab2 ON c1=cx
B) SELECT * FROM tab1 RIGHT OUTER JOIN tab2 ON c1=cx
C) SELECT * FROM tab1 FULL OUTER JOIN tab2 ON c1=cx
D) SELECT * FROM tab1 INNER JOIN tab2 ON c1=cx
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: D | Question # 3 Answer: A | Question # 4 Answer: C | Question # 5 Answer: B |
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