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ETL Interview Questions
Questions Answers Views Company eMail

what is the difference between OLTP database and data warehousing database?

3 7275

what is data modeling?

2313

what is the difference steps for data modeling?

2596

what are the data modeling tools you have used?(polaris)

1998

what is the difference between cardinality and Nullability?

2943

what is Forward,Reverse and Re_engineering?

2196

what is the meant by Normalization and de-normalization?

2 8714

how would u estimate the size of Aggregator transform data and index cache?

2413

how do u decide whether u need to do aggregations at database level or at Informatica level?

1 4300

how would u estimate the size of Lookup transform data and index cache?

1 3947

Give a way in which u can implement a real time scenario where data in a table is changing and u need to look up data from it.How will u configure the look up transform for this purpose?

1 4681

how do u estimate the depth of the session scheduling queue? Where do u set the number of maximum concurrent sessions that Informatica can run at a given time?

2890

how do u really know that paging to disk is happening while u are using a lookup transform?

2428

how do u set partition points in the mapping?

Quintiles,

2239

how do u estimate the number of partitions that a mapping really requires? Is it dependent on the machine configuration?

1 3724


Post New ETL Questions

Un-Answered Questions { ETL }

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

1264


What are dimensions?

1060


what is session partitioning?

1879


Explain do we need an etl tool? When do we go for the tools in the market?

1013


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

1268


Explain and compare etl & manual development?

926


Difference between flat files and relational sources?

2241


HI, Anybody is having informatica Dumps,if it there Can u send to my mail id :sathesh.cool@gmail.com

2041


can u anyone plz share some etl testing interview question . and share the sql queries and unix . plz help me to clear in the etl testing interview by sharing ur knowledge

1803


What is tracing level and what are the types?

958


Explain different types of partitioning?

1041


What is etl process?

936


what are the data sources extracted from logistics cockpit in sap bw project and what is the requirement for it ?

2626


Hi, I completed MCA in 2006.After studied Informatica,SQL server and basics of reporting tool in one of the training center in chennai.I got subject knowledge only.But I didn't go any job because I scared to face real time.Anyone please advice how can I enter again into this and anyone provide real time exposure with project.

1806


1)Power center server and client on the same machine 2)power center server and client on the different machines What is the basic difference in these two setups and which is recommended ?

2116