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

807

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

979

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 are the scrubbing procedures in sas?

1007

1088

What is the difference between in process and inter process?

1147

What are the best sas programming practices for handling very large datasets? : sas-grid-administration

1016

what are the functions required to be called for enabling or disabling the bulk load of mode?

What is a data warehousing?

1156

What do you understand by the cognos?

977

what is data modeling?

1910

What are some different alternative commands associated with "dsjob"?

1169

What is meant by pre and post session shell command?

1159

Explain the different lookup methods used in informatica?

1042

Is hadoop a etl tool?

942

How to eliminate duplicate rows from flat file?

940

Where do you use proc means over proc freq?

1121

hi real timers . iam waiting for ur reply regarding ETL TESTING

2271

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