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最新的 IBM Information Management P2090-047 免費考試真題:

1. What should be considered when you are asked to select the distribution key columns for a very large fact table?

A) Columns used to join to other large tables.
B) Columns that contain few unique values.
C) Columns that contain many nulls.
D) As many columns as possible.

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

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

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

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

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

5. What is true about queries submitted on the PureData System for Analytics Appliance?

A) Queries are uncompressed by the host and sent to the user.
B) Queries are consolidated by the host and executed together in one block.
C) Queries are compiled by the host and executed in parallel by the S-Blades.
D) Queries are compressed by the host and optimized for parallel processing.

問題與答案：