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ETL Interview Questions
Questions Answers Views Company eMail

SCD2 will work on only dimension tables as well as fact Table?

Infosys,

1396

Which transformation we use to convert 'NA' to 'Not Available'

 1267

What is granularity? Please explain with example

IBM,

1 2153

Explain me ETL project architecture in Detail?

Infosys,

2366

In Which Transformation We Can Use Having Clause In Informatica?

 1238

Can anyone tell me what are the roles and responsibilities of informatica support ( L1, L2, & L3 ) Team?

IBM, Saama Tech, Wipro,

1 1891

How to increase performance without changing anything in mapping.( In prod)

IBM, Saama Tech, Wipro,

1258

How to recover a workflow? What are the different approaches?( In prod i.e no access to modify)

IBM, Saama Tech, Wipro,

1191

How to delete data which is not in source table?

IBM, Saama Tech, Wipro,

1335

What are the different ways to deploy the code in informatica?

IBM, Saama Tech, Wipro,

1 2424

I have two tables in two different database, so to join these tables which transformation will be better joiner transformation or lookup transformation?

Accenture, Saama Tech, TCS,

2 3776

What is data modeling and data mining?

 969

What are the ETL Testing Operations?

 1046

Explain the use lookup tables and Aggregate tables?

 973

What is data cleaning?

 939

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Un-Answered Questions { ETL }

How many steps etl contains explain with example?

960

SCD2 will work on only dimension tables as well as fact Table?

1396

What are the types of Data Warehouse applications?

1017

Explain the key challenges that you face while performing etl testing.

1004

What is a lookup table in etl?

1185

What are the various tools used in etl?

1041

How many steps etl contains?

942

where are the log files generally stored.Can you change the path of the file.what can the path be?

2434

What are the steps involved in etl process?

1024

what is pmrep command?

2426

give detail on the sales project how many number of dimensions & fact tables are used in projec briefly. how the four fact tables taken in the project.

2349

what is the use of server?

2190

Is hadoop a etl tool?

940

what is granularity in Data ware House?

1719

Knowledge on what are the improtant characteristice that we need ot consider while developing an ETL Code

1991

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