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

1. How many People are part of your Team? 2. Explain how you create jobs or flow of project? 3. Join Stage vs Lookup vs Merge Stage 4. Summation scenario based question - How you find sum of salary for a specific employee (Explain stages and flow of job)? 5. Explain Remove duplicates stage ? Can you do sort in this stage? 6. SQL Questions - Joins - Types, Difference between Join and Union 7. Unix Questions - How you run the Job, How you list all jobs in project 8. Explain Environmental Variables? 9. SQL Scenario - If you have 3 Identical record in a Table, Ex: 1, Ram, Xyz; 1, Ram, Xyz; 1, Ram, Xyz; Delete only 2 of the records and keep only 1 using the Delete query. How you will you do this?

1 1501

What is Local Cache and how does it help in performance tuning

1 1499

How do you improve the performance of the Cognos Analytics report

1036

What will be the output of using partition by Round-Robin after the partiton by key in ab initio?

1 2160

What will be the skew for, input file->partition by key-> partition by round robin->output file

969

file having these input and we have to get 3 output using same job Input 1 1 1 2 3 4 4 4 o/p1 o/p2 o/p3 1 1 2 2 1 3 3 1 4 4 4

932

how to achieve this output ? Two Input columns(ID & Name) - ID | Name 1 | Jack 1 | Kara In output there should be only 1 column which will be populated as - 1,Jack 1,Kara

806

what is the output when -1 is put in select_expr of FBE?

1406

How to replace last 4 digits of an input column with XXXX given input column has 12 digits?

1085

Code check-in and check-out commands in AbInitio

4315

Given input file with single column having 1 2 2 4 3 .. Required output 1 2 2 4 4 4 4 3 3 3.. How?

987

How to process records in batches like 1-20 records in first execution and 21-40 records in second run.. so on

978

How to convert a single column values 1 2 3 4 to single row of 4 columns ? And vice-versa

1080

Runtime behavior of Normalize and Reformat

2710

What will be the output when a file with 0 records is connected as input to a reformat and an output file? Note that in reformat we have assigned hardcoded values to output columns.

989

Un-Answered Questions { Data Warehouse }

What is a fantrap in business objects?

1170

What is Ad-Hoc access? What is the difference between Managed Query and Ad-Hoc access?

2968

Dimension Object created in Oracle can be imported in Designer Cubes contain measures

2395

server hot-ws270 is connect to Repository B. What does it mean?

2565

What is meant by metadata in context of a data warehouse and how it is important?

1204

What is the difference between using drop = data set option in data statement and set statement?

1163

1932

what are the different types of fact structures?

1102

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

2071

I have 10 columns in a flat file and 10 rows corresponding to that columns. I want column number 5 and 6 for last five records. In unix as well as informtica.

1641

Why do you need stage variables?

1180

What's the Functional & Architectural Differences between Business Objects & Web Intelligence Reports?

2149

What is Online View?

1959

What are stage variables and constants?

1147

How to stop a batch?

984

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