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Data Warehouse Interview Questions
Questions Answers Views Company eMail

difference between source based commit? and target based commit? which is better with respect to performance?

IBM,

6 17123

difference between shortcut and reusable transformation?

 2 9008

how can we perform incremental aggregation?explain with example?

IBM, TCS,

9 20844

Can anyone please send me the latest informatica dumps (power center 8.1.1) for all the three exams? My mail id is yokilamai@gmail.com

 1 3736

If I have table T1 and table T2 T1 has 250 cols and 10,000 rows T2 has 2 billion rows and 10 cols Which one would be Fact table and which one would be Dimension table and why ?

Extech, Principal Finance,

3 7974

Select * from emp,dept,loc where emp.deptno left outer join dept.deptno and dept.locno=loc.locno. No need to consider the syntax but is it possible to have left outer join and equi join in the same SQL like this ? can we have right outer join and left outer join in the same SQL ---

Principal Finance, PT Metalogix Infolink Persada,

1 7061

working with Business Objects 6.1(a), i m facing a problem. when i save the BO report containing chart aswell as table in .xls then the null vlues in the table automatically are converted to 0, thereby istorting the chart also. please provide me the solution as soon as possile.

 1 3917

What is max core value ? what is the use of it?

JPMorgan Chase, Wipro,

2 25330

In Join component which record will go to unused port and which will go to reject port ?

JPMorgan Chase,

3 25160

What would the following datastep do? Data _null_; Set Dist end=eof; Call Symput("xx"!!left(put(_n_,2.)),&dimension); If EOF then Call Symput('numrows',left(put(_n_,2.))); Run; dimension is a macro variable that is being passed here

 2 5475

if we increase the number of dimensions will the rows in fact table increase or decrease??

IBM,

3 8095

Which is the optimized method of extracting the data.

 3 5860

How to handle time period attribute for time dependent data?? a.)add time period as a part of pk b.)add time period simply and make it nullablec.)add time period simply and make it not null.

 1 3471

How to handle time period attribute for time dependent data?? a.)add time period as a part of pk b.)add time period simply and make it nullablec.)add time period simply and make it not null.

IBM,

1 4769

Business rule implemntation depends on? 1.)ETL requiremnts 2.)ETL performance 3.)business requirements.

 4 6643

Un-Answered Questions { Data Warehouse }

where to store informatica rejected data?

671

How do you add a number to a macro variable? : sas-macro

538

What do you mean by caching in teradata?

597

I have ten columns that needs to be totalled... but some columns are empty...how do i get sum all the columns even if sum are empty? Can i get a total of the rows instead of columns? if yes, what is the function to be used?

1525

explain about your project architecture in ssis..could u please send to my mail..vinod.kjvk@gmail.com

3611




What are the some differences between 7.x and 8.x version of datastage?

730

What are the modules in Power Center

1218

What are the types of facts in microstrategy?

613

Define bulk load mode?

5

What is the difference between connected and unconnected stored procedures?

539

What are the steps involved after the disk manager passes the request?

568

Can you connect multiload from ab initio?

635

What are the types of lookup transformation?

627

how many types of viewers available in tm1?

5

in sap bi we have wad, then why we go for sap bo

2770

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