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

2. What is the fastest join utilized by PureData System for Analytics?

A) Cross product join.
B) Merge join.
C) Hash join.
D) Expression join.

3. Which statement is NOT true?

A) nzrestore can restore from an nzbackup UNIX pipe.
B) nzrestore can restore to a different database from the backup database.
C) nzrestore can restore selected tables.
D) nzrestore can restore to a different PureData System for Analytics server from the backup server.

4. nzload is invoked with the "allowReplay" option enabled. While the PureData System for Analytics Appliance changes state from online to pausing then to online, which statement is true about the nzload process on the Appliance?

A) nzload automatically continues without user intervention.
B) nzload automatically restarts but the user must remove the allowReplay option.
C) nzload must be stopped and resumed by the user from the last check point.
D) nzload will fail.

5. When a CREATE TABLE AS (CTAS) is performed on a table creating more than 1,000,000,000 rows, which statement is true?

A) Primary key constraints will be checked.
B) Materialized views will be automatically generated.
C) Statistics will automatically be generated.
D) Groom will be automatically invoked.

Solutions: