Data Warehouse Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Teradata (490)
Business Objects (875)
Cognos (1143)
Informatica (2428)

SAS (1049)
Micro Strategy (282)
ETL (315)
OBIEE (92)

Data Warehouse Interview Questions

Questions Answers Views Company eMail

which is the most complex job in your career? Please tell me answer?

IBM, Wipro,

2 7723

What is the surrogate key? what is the use of surrogate key? how to Create surrogate key Generator in scd2 in 8.5?

SLK Software,

5 10548

how many types of sorting the data in data stage?

BoA, IBM,

1 7039

how many types of remove the duplicate records?

Caterpillar,

3 11865

hi i am madan, in real time data stage who is the source provide? and how to recevied in developer? Pls send me answer

HCL,

1 3817

Hi this madan, in data stage one file in Empno 12345678910 in a table, i want target is Empno 1 2 3 4 5 6 7 8 9 10

Tech Mahindra,

5 11115

who is the best faculty for informatica in hyderabad ameerpet?

1 4309

can any one explain about blue prints&performance tuning in cognos?

TCS,

1 3865

What are the best practices while building a Cognos Framework Manager Package ? As in, what calculations would you not like to be handled in FM and rather get it directly from Database.

3 7086

Explain the workflow of your current project from end to end?what is the steps?

Accenture, Cap Gemini, Cognizant, HCL, IBM, Infosys, Nokia,

2 8974

Label in Informatica. How to remove existing Label.

IBM, Infosys,

1 10171

What is Cognos Mashup Services .what is the use of Cognos Mashup Services and where to use.

1 4082

generate Unique sequence numbers for each partition in session with Unconnected Lookup ? Hi All, Please help me to resolve the below issue while Applying partitioning concept to my Session. This is a very simple mapping with Source, Lookup , router, and target. I need to Lookup on the target and compare with the source data, if any piece of data is new then Insert, and If any thing change in the existed data then Update. while Inserting the new records to the target table I'm generating sequence numbers with Unconnected lookup, by calling the maximum PK ID from the target table. The above flow is working fine from last one year. Now I wish to apply the Partitioning concept to the above floe(session) At source I used 4 pass through partitions.(For Each partition different filter conditions to pull the data from source) at Target I used 4 passthrough Partitions. it is working fine for some data, but for some rows for Insert Operation , it is throwing Unique key errors, because while Inserting the data it is generating the same sequence key twice. In detail : 1st row is coming from 1st partition and generated the sequence number 1 for that row. 2nd row is coming from 1st partition and generated the sequence number 2 for that row 3rd row is coming from the 2nd partition generated the sequence number 2 again for that row. (it must generate 3 for this row) the issue is becuase of generating the same sequence numbers twice for different partitions. Can any one Please help me to resolve this issue. While Applying partitions how can I generate a Unique Sequence numbers from Unconnected lookup for Each partitioned data. Regrads, N Kiran.

Tech Mahindra,

2 7204

My i/p is like below 1,2,3,4,5,6,7,8,9,10....100 I want that to be populated in two o/p as below o/p-1: 10,20,30,40,50,60,70,90... o/p-2: 11,21,31,41,51,61,71,81,91.... How to do it in ingotmatica...

Accenture,

2 5487

My i/p is 1,2,3,4,5,6,7,8,9,10……….. o/p to be populate in two tables as below. o/p1: 10,20,30,40,50,60,70,80,90……. o/p2: 11,21,31,41,51,61,71,881,91…….

Accenture,

7 10387

Un-Answered Questions { Data Warehouse }

1)what is the size of Fact table and dimension table? 2)how to find the size of Fact table and dimension table? 3)how to implement the surrogate key in transform stage? 4)write the configuration file path? 5)how many types of datasets explain? 6)diff b/w developed projects and migration projects? 7)how to delete the header and footer file of the sequencer file? 8)how can u call the parameters in DS in unix environment? 9) how much data ur getting daily ? 10)

2796

does anyone "QlikView" BI tool. if you have any docs send me pls. yaparas84@gmail.com

6079

What r the names of the reports that you prepared?

1032

What sort of existing documents should business analysts refer to when starting on a new project?

1078

What is aggregate table and aggregate fact table ... Any examples of both?

1120

sas implementing companies in pune implementing clinical projects if anyone knows plz send ans immediately

3666

EXL informatica Questions

1463

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

4019

Write the unconnected lookup syntax and how to return more than one column.

1174

Explain have you ever been in a real dilemma at work? What did you do to get out of it?

1044

what are the dimensions that you have in your current project?list them?

2095

Source has 2 columns: USA,NewYork INDIA,MUMBAI INDIA,DELHI UDS,CHICAGO INDIA,PUNE i want data in target like below: INDIA,MUMBAI1 INDIA,DELHI2 INDIA,PUNE3 USA,NEWYORK1 USA,CHICAGO2

848

hi tell be about pfizer? how to compare the work with other companies ? please tell me how to login and work also?

2127

Hi, If any hav Informatica n DWH FAQ's,Plz do fwd to s.rajanikanth1980@gmail.com Thnx Vani

2344

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

4194

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