Teradata Interview Questions
Questions Answers Views Company eMail

Can any one please provide me practical example of How to do the performance tuning in Query??

Amdocs,

5 9957

Why FLOAD does not support multiset tables??

TCS, Tesco,

3 12727

What is collect State in Teradata ? what it use and how it works??

TCS,

3 11198

What EXPLAIN does in Teradata, what is High confidence, Low confidence and No confidence.. And How we improve the query performance .

Accenture,

5 31938

What is the difference between correlated sub queries and inner queries?

4 14394

Hello all, There is a table with 4 columns in that 3 columns has been already loaded with 5 million records.4th column is empty,Now I have got 5 million records data which has to be loaded into 4th column.How can I load this data fastly in to the 4th column with out using update

CTS, TCS,

5 13137

Where we use PPI in real time??? What is the disadvantages of PPI?

IBM, Mphasis,

3 9200

What is the Maximum number of volatile tables that can be created?

Mphasis,

4 8669

What is a pseudo key? What is its use???

Mphasis,

2 17435

Can u load same data into multiple tables using multiload? How will be the loading process? Whether it will be serially or parallely?

IBM,

2 8080

How to handle nulls in Teradata??? How many columns can be there in a table??? How to find average sal with out using avg function????

Mphasis,

3 11734

In which scenarios we use Volatile tables and Global temporary Tables in Real time? Please give me one real time scenario???I know wat is its use??

CTS, Lexicon,

3 15154

What is differnce between Error code and Error Level in Bteq

IBM,

6 36733

Can we take collect stats on Dervied Tables and Volitable tables, What is Golabal Temporary table what is the use of this Golabal Temporary table ,When we create any kind table in Teradata it will show in Golabal Temporary table

IBM,

6 18965

What is the default join strategy in Teradata???

IBM,

5 23409


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Un-Answered Questions { Teradata }

What is spool space?

589


How to find duplicates in a table?

599


What are the frequently used data types in teradata?

585


Highlight the differences between Primary Key and Primary Index.

602


Explain some differences between mpp and smp?

578






What is bteq utility in teradata?

561


What do high confidence, low confidence and no confidence mean in explain plan?

579


What are teradata utilities?

577


Difference between inner join and outer join?

573


What are the things to be considered while creating secondary index?

617


What are the uses of client software involved in teradata?

523


What are the available primary index types?

704


What is meant by a Virtual Disk?

568


if collect stats but it show low confidence why?

1171


Explain amp in teradata?

562