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

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

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

2. What is nzconvert usedfor?

A) To translate stored procedures into NZPLSQL compatible syntax.
B) To convert compressed external tables into ASCII text.
C) To upgrade/downgrade the database to a different software version.
D) To convert between character encodings before loading data.

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

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

4. Which statement is true?

A) GENERATE STATISTICS can be run against EXTERNAL tables.
B) EXTERNAL tables can be used to unload data to a Microsoft Windows directory.
C) MATERIALIZED VIEWS can be run against EXTERNAL tables.
D) EXTERNAL table data is deleted using the SQL DELETE command.

5. Which piece ofinformation is NOT gathered as part of the statistical information when generate statistics is run on a table?

A) The minimum and maximum value in each column.
B) The number of rows in the table.
C) The number of updated rows in the table.
D) The number of unique or distinct values in each column.

Solutions: