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

1. You have access to two databases, DEV and PROD. Currently you are connected to the DEV database. Which operation is permitted?

A) Select * from PROD..TableA
B) Delete from PROD..TableA
C) Truncate table PROD..TableA
D) Insert into PRO.TableA select * from DEV..TableB

2. Why is table skew important to manage?

A) High table skew negatively impacts performance.
B) Low table skew negatively impacts performance.
C) Low table skew negatively impacts data compression.
D) Deleted rows consume disk space until they are freed.

3. An ETL/ODBC application is inserting 1 million records in a single transaction against the PureData System for Analytics. 1 million individual INSERT SQL statements are generated. What can make this faster?

A) Increase the Socket Buffer Size.
B) Use an EXTERNAL TABLE.
C) Use a COPY command.
D) Set the COMMIT interval to 10,000.

4. When is the ToplogyImbalance event triggered?

A) When a disk enclosure's voltage sensor is reading outside the nominal range.
B) When a SAS switch has failed.
C) When an S-Blade has ownership of more dataslices than is optimal (usually following a disk replacement).
D) When the path the path between an S-Blade and its disks has failed.

5. What will occur when two tables are joined together and the data is NOT collocated?

A) A cluster based join method is performed.
B) No data movement is required.
C) A merge join operation will be performed.
D) Data is dynamically redistributed or broadcasted.

Solutions: