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Data Warehouse Interview Questions
Questions Answers Views Company eMail

Can we use Union Transformation for Heterogeneous sources? i.e; 3 sources, 1 from Oracle, 2nd from Informix, 3rd from Sql Server with same metadata?

TCS,

3 10366

one file contains col1 100 200 300 400 500 100 300 600 300 from this i want to retrive the only duplicate like this tr1 100 100 300 300 300 how it's possible in datastage?can any one plz explain clearley..........?

IBM,

8 13310

write sql query following table amount year quarter 1000 2003 first 2000 2003 second 3000 2003 third 4000 2003 fourth 5000 2004 first 6000 2004 second 7000 2004 third 8000 2004 fourth i want the output year q1_amount q2_amount q3_amount q4_amount 2003 1000 2000 3000 4000 2004 5000 6000 7000 8000

HP,

1 4609

write sql query following source table jan feb mar apr 100 200 300 400 500 600 700 800 900 100 200 300 i want the output format like month total jan 1500 feb 900 mar 1200 apr 1500

Accenture,

3 8551

write sql query following table quarter sales q1 1000 q1 2000 q1 3000 q1 4000 q2 5000 q2 6000 q2 7000 q2 8000 q3 1000 q3 2000 q3 3000 q3 4000 q4 5000 q4 6000 q4 7000 q4 8000 i want the output format like q1 q2 q3 q4 1000 5000 1000 5000 2000 6000 2000 6000 3000 7000 3000 7000 4000 8000 4000 8000

CTS,

5 10165

write sql query following table city gender no chennai male 40 chennai female 35 bangalore male 25 bangalore female 25 mumbai female 15 i want the required output city male female chennai 40 35 bangalore 25 25 mumbai 15

Tech Mahindra,

5 12853

i did MBA in 2008. i got job as a Software Engineer(Informatica) in 2008 February in our college campus interviews through consultancy. my problem is when iam going interview HR people ask " YOu are MBA graduate how u get software(informatica) job". iam saying i got job in campus interviews. i have knowledge in informatica in dataware housing. is this answer correct or not. plese give me guidence

IBM,

1 4050

In document how to create metrics?Explain

TCS,

3 8446

what is the difference b/w the public object&schema object

TCS,

5 19905

Why the UNION TRANSFERMATION is an Active TRANSFERMATION

Emphasis,

6 9767

On a day i load 10 rows in my target and on nextday i get 10 more rows to add in target. But out of 10 - 5 records are send them to target?how i can insert the remaining records

1 3090

diff between changecapture & diffrence stage which situvation we can use the diffrence stage ?

TCS,

1 4175

what are the devoleper roles in real time? plz tell i am new to datastage....

Mphasis,

2170

I have done MBA in 2008. i got job as business analyst in 2008 january through consultany. but after 3 months they are giving training Informatica developer. now iam continuing this job. my question is when iam going to interview HR people ask me many times like this " YOU ARE MBA GRADUATE. HOW YOU ARE SELECT THIS POSTION. IAM EXPLAINING WHAT I HAVE MENTION ABOVE". PLEASE TELL HOW IAM TELLING THIS QUESTION ANSWER.

2002

what is normalization and denormalization

CTS,

2 14125


Un-Answered Questions { Data Warehouse }

Explain the different kinds of facts.

998


What is an expression transformation in informatica?

1049


How do we resolve attribute roles in microstrategy?

1164


Explain the purpose of retain statement.

1079


Why does microstrategy object manager search for object dependencies?

979


Clarify the utilization of aggregator cache record?

1017


Can you pass sql queries in filter transformation?

1027


What is merge stage?

1323


What is an IDQ file? What is the purpose of the IDQ file and what kindof information does it usualy hold? Can it be imported by informatica?

5657


How many universes can be created in a project?

1065


What is the use of divide function?

1075


How can we send the flat file data to different targets(which are also flat files) based on the name of flat file with out adding extra columns?

2196


Can we collect statistics on table level?

1051


how to construct simple biogas digerter? please show me detail drawing and specification of simple biogas construction?

2470


how do you manage the production space. what are the proactive methods you can take ?

1957