Teradata Interview Questions and Answers

Last updated on Mar 21, 2022
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Teradata Interview Questions

Most Frequently Asked Teradata Interview Questions

Here in this article, we will be listing frequently asked Teradata Interview Questions and Answers with the belief that they will be helpful for you to gain higher marks. Also, to let you know that this article has been written under the guidance of industry professionals and covered all the current competencies.

Q21. Explain parsing engine in Teradata?

In Teradata, Parsing Engine is a type of virtual processor for session control, SQL parsing and task dispatching in the multitasking and possibly Teradata Database’s parallel-processing environment.

Q22. Explain vproc in Teradata?

In Teradata, Vproc or Virtual Processor is a simulated processor present in a processing software system, or in a software version of a dedicated physical processor. Each of Vproc uses a portion of the physical processor resource and runs independently of another virtual processor.

Q23. Explain fallback in Teradata?

In Teradata, Fallback is a feature that offers enhanced data protection beyond that provided by redundant hardware components. Fallback is enabled when a failure occurs, Teradata can continue to perform the update, delete and insert functions because redundant copies of data exist on one or more fallback AMPs.

Q24. What are Teradata utilities?

Teradata utilities offer developers options to quickly load data into a Teradata database or export data from a database of Teradata to a client application.

Q25. What do you mean by TPT in Teradata?

TPT or Teradata Parallel Transporter is a new generation and advance load/unload utility provided by Teradata. TPT acts as an integrated ETL suite that helps to extract data from multiple sources, load data in target Teradata database and apply transformation logic.

Q26. What is the difference between union and union all in Teradata?
S.no Union Union All
1. It removes duplicate records where all columns in the results are the same. It doesn’t remove duplicate records where all columns in the results are the same.
2. The performance will be impacted with the use of Union as additional work will be performed to remove duplicate rows. The performance will not be impacted.
Q27. Explain the types of join supports by Teradata?
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