IBM P2090-050

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

1. How does the PureData System for Analytics utilize the distribution key to store records on disk?

A) System assigns records to a logical data slicebased on their distribution key value.
B) System assigns records to the host based on their distribution key value.
C) System assigns records to a Netezza Database Accelerator based on their distribution key value.
D) System assigns records to a FPGA based on their distribution key value.

2. Which will result in support for zonemaps on the LastName column?

A) CREATE TABLE TableA (LastName VARCHAR(20));
CREATE MATERIALIZED VIEW ViewA AS SELECT * FROM TableA ORDER BY
LastName;
B) CREATE TABLE TableA (LastName VARCHAR(20));
C) CREATE TABLE TableA (LastName VARCHAR(20));
ALTER TABLE TableA ZONEMAP ON (LastName);
D) CREATE TABLE TableA (LastName VARCHAR(20)) DISTRIBUTE ON (LastName);

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

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

4. Which two statistical data points are automatically updated when performing an INSERT on a table? (Choose two.)

A) The column histogramstatistics.
B) The number of unique values in each column.
C) The number of rows in the table.
D) The minimum and maximum column value information (excluding text columns).
E) The number of NULLs in each column.

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

Solutions: