IBM Information Management P2090-047

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IBM P2090-047 Exam Syllabus Topics:

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

1. Why is table skew important to manage?

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

2. What is the host Linux file that must be modified to adjust optimizer settings permanently?

A) /nz/kit/log/sysmgr/sysmgr.log
B) /nz/data/config/system.cfg
C) /nz/data/postgresql.conf
D) /nz/kit/sys/initTopology.cfg

3. Which two characteristics describe materialized views. (Choose two.)

A) Materialized views can contain an ORDER BY clause.
B) Materialized views can contain a HAVING clause.
C) Materialized views can contain aggregates.
D) Materialized views can reference only one base table in the FROM clause.
E) Materialized views can contain a WHERE clause.

4. What operating system runs on a PureData System for Analytics host?

A) Redhat Linux
B) Nucleus OS
C) AIX
D) SUSE Linux

5. Why is generating statistics on a table important to query performance?

A) The table statistics are used to facilitate disk space reclamation of deleted rows.
B) The Field Programmable Gate Array (FPGA) utilizes the statistics to identify which row/columns to filter.
C) The Zone Map information cross references the table statistics for each column to avoid scanning.
D) The optimizer uses statistics to determine the optimal execution plan for queries.

Solutions: