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

1. TableA is currently being accessed in a number of long running queries. Which of the following operations is NOT blocked, thus allowing the operation to immediately proceed?

A) GRANT SELECT ON TableA TO UserA
B) DROP TABLE TableA
C) TRUNCATE TABLE TableA
D) ALTER TABLE TableA

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

3. What two characteristics can be changed when using the CREATE TABLE AS (CTAS) statement to copy TableA to TableB? (Choose two.)

A) The privileges on TableA.
B) The distribution key of TableB.
C) The materialized views on TableB.
D) The order of the data stored in TableB.
E) The views on Table

4. What are two considerations for usage of materialized views? (Choose two)

A) Materialized views may improve query performance.
B) Materialized views are logical entities.
C) Materialized views are not supported.
D) Materialized views are considered for usage by the Optimizer.
E) Materialized views are the same as database views.

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

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

Solutions: