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

1. If data is being nzload'ed into TableA, which of the following operations will be blocked until the load has completed?

A) A TRUNCATE of TableA
B) An nzbackup of the database in which TableA resides
C) A SELECT from TableA
D) A DELETE from TableA

2. To create a database table, at a minimum, what must be specified?

A) column name, data type and default constraint.
B) column name, data type and primary key.
C) column name, data type and distribute on clause.
D) column name and data type.

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

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

4. What is nzconvert usedfor?

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

5. Short Query Bias (SQB) allows forreserved resources to be used for which type of query?

A) Queries returning only one row in the result set.
B) Queries with a runtime estimation of less than 2 seconds.
C) SQL statements less than 255 characters in length.
D) Queries with no joins.

Solutions: