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IBM P2090-050 Exam Syllabus Topics:

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

Question 1

When doing a CREATE TABLE, constraints can be specified at the column level. Which two constraints are NOT automatically enforced via the database? (Choose two.)

A. UNIQUE
B. DEFAULT value
C. PRIMARY KEY
D. NULL
E. NOT NULL

Question 2

A table, TableA has one column, ColumnA. Thefollowing query can be used to determine the skew of Table A.

A. Select ColumnA, count(*) from TableA group by ColumnA order by 2;
B. Select datasliceid, count(*) from TableA group by 1 order by 2;
C. Select distinct (ColumnA) from TableA;
D. Select distinct(datasliceid) from TableA;

Question 3

What is the maximum number of columns that can participate in a distribution key?

A. Four
B. Depends on the number of columns of integer datatype.
C. One
D. Unlimited

Question 4

Given the following query: Select count(*) from TableA; How can you view the query plan without executing the query?

A. Use explain.
B. Set show_plan = true;
C. Use statistics.
D. Use pg.log file.

Question 5

Why is table skew important to manage?

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

Solutions: