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IBM PureData System for Transactions Technical Mastery Test v1 Sample Questions:

1. A SELECT statement spends all its time returning 1 billion rows. What can be done to make this faster?

A) Increase the PreFetch Count.
B) Use a CURSOR.
C) Use an EXTERNAL table.
D) Use the COPY command.

2. Within a single PureData System for Analytics, what is the fastest way to copy a 10TB TableA from DatabaseA to another DatabaseB?

A) Use nzbackup and nzrestore commands.
B) Use external tables and UNIX pipes.
C) Use the COPY command.
D) Use a CTAS (Create Table as Select) SQL statement.

3. Which condition will NOT fail or restart a running query on a PureData System for Analytics Appliance?

A) S-Blade resets or fails.
B) Disk resets or fails.
C) Snippet Processing Unit (SPU) resets or fails.
D) Host resets or fails.

4. When working with sequences, which statement will always be true?

A) The sequence number assigned will be unique across all tables and databases.
B) The first value generated is the number 1.
C) Integers (whole numbers) are generated.
D) One-up numbers are generated.

5. Given the following query: Select count(*) from TableA; How can you view the query plan without executing the query?

A) Use statistics.
B) Use explain.
C) Set show_plan = true;
D) Use pg.log file.

Solutions: