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

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

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

2. Which statement is NOT true?

A) nzbackup backs up to a file system destination.
B) nzbackup backs up to a IBM Tivoli Storage Manager destination.
C) nzbackup backs up to a Veritas NetBackup destination.
D) nzbackup backs up selected tables.

3. Which nzload operation statement is correct?

A) nzload performs singleton inserts.
B) nzload must have a control file.
C) nzload must be run from the PureData System for Analytics host.
D) nzload user must have CREATE EXTERNAL TABLE privilege.

4. When creating a table, you can specify a column constraint for each individual column of either "NULL" or "NOT NULL". When column values are later evaluated within a query statement, which of these is true?

A) 0 is not equal to null, the empty string ( '' ) is not equal to null.
B) 0 is equal to null, the empty string ( '' ) is equal to null.
C) 0 is not equal to null, the empty string ( '' ) is equal to null.
D) 0 is equal to null, the empty string ( '' ) is not equal to null.

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

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

Solutions: