ETL Interview Questions
Questions Answers Views Company eMail

What are the new features of informatica 9 version?

2 7872

What is Relational Integrity?

1 3474

working of line item dimension......pls,tell overall flow

1 3614

If you concatenate data from a normalizer transformation,the ports you concatenate cannot include OCCURS(T/F).

1 11390

How to Check the source record count from traget table.

IBM,

5 12240

how to load the data to fact table?

2153

Can anyone explain me a scenario from banking and finance...more precisely a mapping

IBM,

2061

How to load Session Statistics (Workflow name, TgtRows, Rejected Rows, SessStartTime,SessEndTime..)into a database table ?? Another Question: I want to pass values from oracle table or Flat file in Mapping parameter/Variable.. What is the method for that..Please provide me the solution step by step

1 7090

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.

HCL,

1924

1. if lookup tr is giving poor performamence. what u do. 2. i have emp,dept table. i want output ename,empno,dname,max(sal). 3. can any one tell me project flow in real time scenario. please send me mail any queries and answers my mail id is yaparala@gmail.com

HCL, iGate,

2 5742

What is the main difference between peek stage and copy stage

2 17630

Hi please try to reply with answer. my mail id is raghu.1028@gmail.com. if the source is having millions of records, but having theree target tables. As per user the first record need to insert into first target and second record in to a second target and third into third target, similarly the process needs to repeat?

5 6969

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

1554

diff b/w dwh & data mart diff b/w star schema & snow flake schema diff b/w fact table & dimension table what are the contents in requirement specification what are the docs needed for testing draw ur proj architecture

L&T,

2093

indatastage 8.1 surrgoate key generates seqences numbers write but there is limite value i want to reset the seqence after gettting some highest value like i want o/p like this 1 2 3 4 5 .............10000 1 2 3.........10000

TCS,

1 4245


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Un-Answered Questions { ETL }

When do we analyze the tables?

540


What are dimensions?

577


Do we need an ETL tool? When do we go for the tools in the market?

524


Compare ETL & Manual development?

554


What do you understand by the term ‘transformation’?

524






What is full load & incremental or refresh load?

685


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

1928


What are the different Lookup methods used in Informatica?

518


What is abap? What are idocs?

516


Can u access a repository created in previous version of Informatica?

1466


What is grain of fact?

541


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.

1924


Explain about power designer data modeling software?

465


what is the difference steps for data modeling?

1585


Explain what is etl process? How many steps etl contains explain with example?

507