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ETL Interview Questions
Questions Answers Views Company eMail

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

3 7273

what is data modeling?

2312

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?

2194

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 4299

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 4680

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 3723


Post New ETL Questions

Un-Answered Questions { ETL }

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.

2357


how do u extract data from different data sources explain with an example?

2244


What is tracing level? How many types of transformations supported by sorted input?

971


What is fact? What are the types of facts?

1115


How to delete data which is not in source table?

1336


Informatica server and client are in different machines. You run the session from the server manager by specifying the source and target databases. It displays error . You are confident that everything is correct. Then why it is displaying the error?

3766


What is full load & incremental or refresh load?

1203


can be used COM component in Informatica ?

2059


how to do aggregation (year wise quantity ) using only source qualifier, the source is sql server date as datetime data type and target as flat file with year (string datatype)

2695


what is session partitioning?

2127


What are the etl testing operations includes?

1109


What is tracing level?

1063


How etl testing is different from database testing?

1045


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

2041


Assume u have a 24CPU machine with 24GB RAM, suggest how u would like to configure Informatica ,like number of concurrent sessions, RAM requirements etc,max partitions that u would permit per mapping.

1954