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

1. Which is NOT a function of the FieldProgrammable Gate Arrays (FPGA) residing on the Netezza Database Accelerator card?

A) Projects
B) Decompresses
C) Aggregates
D) Restricts

2. Using a date column as a distribution key may distribute rows evenly across dataslices, why is this a poor choice of a distribution key?

A) Queries on date range will utilize only host processing.
B) Queries on the table will invoke compression.
C) Queries on the table will invoke compression on the date columns.
D) Queries on date range may involve processing skew.

3. When creating a table, you can specify a column constraint for each individual column of either "NULL" or "NOT NULL". When column values are later evaluated within a query statement, which of these is true?

A) 0 is equal to null, the empty string ( '' ) is equal to null.
B) 0 is not equal to null, the empty string ( '' ) is not equal to null.
C) 0 is not equal to null, the empty string ( '' ) is equal to null.
D) 0 is equal to null, the empty string ( '' ) is not equal to null.

4. The PureData System for Analytics implements which level of transaction isolation?

A) Uncommitted read
B) Serializable
C) Committed read
D) Repeatable read

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

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

Solutions: