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



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

Answer / chintan thakkar

It should always be done at SQ level, that will improve the performance of the mapping since informatica stores a cache for aggregator transformation.

Is This Answer Correct ?    0 Yes 0 No

Post New Answer

More ETL Interview Questions

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

1 Answers  


When you have 2 servers in two different time zone and if you need to extract data from 1 server and load it in another server, how do you go about it? Best method to be used.

3 Answers  


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

1 Answers   IBM, Saama Tech, Wipro,


what is the meant by Normalization and de-normalization?

1 Answers  


What are three tier systems in etl?

1 Answers  


What is a mapping?

1 Answers  


Need Informatica Power Center 9.1 free download(for all windows version)

1 Answers   ABC,


how to connect to a flatfile through ftp in informatica

2 Answers   TCS,


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

1 Answers  


What do you understand by active and passive transformations?

1 Answers  


In Which Transformation We Can Use Having Clause In Informatica?

1 Answers  


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.

1 Answers   HCL,


Categories