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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 10354

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 13287

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 4602

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 8539

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 10152

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 12832

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 4041

In document how to create metrics?Explain

TCS,

3 8429

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

TCS,

5 19891

Why the UNION TRANSFERMATION is an Active TRANSFERMATION

Emphasis,

6 9738

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 3083

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

TCS,

1 4169

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

Mphasis,

2164

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.

1997

what is normalization and denormalization

CTS,

2 14118


Un-Answered Questions { Data Warehouse }

Are you involved in writing the inferential analysis plan? Tables specfications?

2229


What is called data cleaning?

1245


What is domain and gateway node?

1172


How do we convert from Numeric to be Words?

3027


What is the difference between junk dimension and degenerated dimension?

1144


what is sas data set?

1109


explain about balanced dimension,

987


What are prompted filters?

939


What are the databases that informatica can connect to windows?

1059


1.Have u logical models in project? If s which logical model used? 2.how do u connect to production server? 3. how do u test the data in report is same as in DWH? 4. u created one report but there is no data in the attribute. But how can u extract the data from ware house? 5. u have two tables having different ids how do u merge those table in MSTR? 6. have u faced challenging situation in u r project? Give me one example?

2575


Is it possible to use a client with different version than that of its Informatica server?

1152


What is the command used to find missing values?

1107


How do you improve the performance of a graph?

1152


What are the types of folder present in cognos?

1099


why a stop statement is needed for the point= option on a set statement?

1085