IBM A2090-730

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IBM A2090-730 Exam Syllabus Topics:

IBM Assessment: DB2 9 Family Fundamentals Sample Questions:

Question #1
60 Which of the following best describes how locks are used in DB2?

A. To maintain control of updated rows for commit processing
B. To ensure only committed changes are altered by another application
C. To prevent multiple applications from accessing the same data simultaneously
D. To allow two applications to update the same row of data simultaneously

Question #2
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 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.
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 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.

Question #3
Which of the following will begin a new unit of work?

A. The BEGIN TRANSACTION statement
B. The CONNECT statement
C. The first executable SQL statement
D. The first FETCH of a cursor

Question #4
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 B will wait until applicationA releases the Update lock.
B. Application A will be terminated so that application B can read the row.
C. Application B will read the row.
D. Applications A and B will cause a deadlock situation.

Question #5
Which of the following is the best statement to use to create a user-defined data type that can be used to store currency values?

A. CREATE DISTINCT TYPE currency ASNUMERIC(7,2)
B. CREATE DISTINCT TYPE currency AS SMALLINT
C. CREATE DISTINCT TYPE currency AS BIGINT
D. CREATE DISTINCT TYPE currency AS DOUBLE

Solutions: