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Teradata Database Administration 12 Test

Topics Covered

  • Teradata Physical Design and Implementation
  • Teradata Database Administration

Useful for hiring

  • Teradata Database Administrator
  • Teradata Administrator
  • Data Analyst

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Question

A table has been partitioned using the RANGE_N function and includes the NO RANGE and UNKNOWN partitions. There are gaps in the ranges and the designer needs to add new partitions to fill the gaps. The data in the NO RANGE partitions must be checked against the new partitions. Which procedure should be used?

Answer
    • Create another table with the new partition definition, then submit an INSERT SELECT statement to populate the new table.

    • Create another table with the new partition definition, then extract the data from the NO RANGE and UNKNOWN partitions and import the data into the new table.

    • Submit an ALTER TABLE statement to add the new partitions, extract the data from the NO RANGE and UNKNOWN partitions, and import the data into the existing table.

    • Submit an ALTER TABLE statement to add the new partitions, then data from the NO RANGE and UNKNOWN partitions will automatically be checked against the added partitions.

Question

Which action will help conserve disk space?

Answer
    • Set permanent space limits for each table that is created.

    • Specify a limit on spool space for users in their profile.

    • Use a low number for the Cylinders saved for PERM setting.

    • Use the DBQL.LogSQL table instead of the DBQL.LogSummary table.

Question

What is a benefit of extrapolated and propagated statistics?

Answer
    • No statistics need to be collected.

    • Statistics only need to be collected once.

    • There is less need for frequent statistics collection.

    • Statistics are automatically collected as a background process.

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