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IBM PureData System for Transactions Technical Mastery Test v1

Question No: 81 – (Topic 2)

What is the naming convention for system views?

A. _v_…

B. nz_v_…

C. _$v_…

D. sys_v_…

Answer: A

Question No: 82 – (Topic 2)

What is the maximum number of columns that can participate in a distribution key?

  1. One

  2. Four

  3. Unlimited

  4. Depends on the number of columns of integer datatype.

Answer: B

Question No: 83 – (Topic 2)

If data is being nzload#39;ed into TableA, which of the following operations will be blocked until the load has completed?

  1. A DELETE from TableA

  2. A SELECT from TableA

  3. A TRUNCATE of TableA

  4. An nzbackup of the database in which TableA resides

Answer: C

Question No: 84 – (Topic 2)

What two conditions must be met to achieve a collocated join between two tables? (Choose two.)

  1. Both tables have primary keys defined.

  2. Both join columns have the same name.

  3. Both tables must be distributed on random.

  4. Both join columns have identical data types.

  5. Both tables must be distributed on their join column.

Answer: D,E

Question No: 85 – (Topic 2)

Which statement is true regarding the compress engine?

  1. Compression ratio is data dependent.

  2. Compression is performed by the host.

  3. Compression degrades data scan speeds.

  4. Compression is performed by the SAS switches.

Answer: A

Question No: 86 – (Topic 2)

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

  1. Serializable

  2. Committed read

  3. Repeatable read

  4. Uncommitted read

Answer: A

Question No: 87 – (Topic 2)

The simplest query execution plan file must have the following minimum nodes?

  1. ScanNode, RestrictNode, LimitNode, ReturnNode

  2. ScanNode, RestrictNode, HashNode, ReturnNode

  3. ScanNode, RestrictNode, ProjectNode, ReturnNode

  4. ScanNode, RestrictNode, AggregateNode, ReturnNode

Answer: C

Question No: 88 – (Topic 2)

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

  1. Queries with no joins.

  2. Queries returning only one row in the result set.

  3. SQL statements less than 255 characters in length.

  4. Queries with a runtime estimation of less than 2 seconds.

Answer: D

Question No: 89 – (Topic 2)

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

  1. Queries are uncompressed by the host and sent to the user.

  2. Queries are consolidated by the host and executed together in one block.

  3. Queries are compiled by the host and executed in parallel by the S-Blades.

  4. Queries are compressed by the host and optimized for parallel processing.

Answer: C

Question No: 90 – (Topic 2)

What two types of notification can be configured for an event? (Choose two.)

  1. Insert a row into TableA.

  2. Run a stored procedure.

  3. Run a command on the active Host.

  4. Send an email to a list of addresses.

  5. Send a Simple Network Message Protocol (SNMP) event.

Answer: C,D

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