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

Hi , Today 1000 records updated, tomorrow 500 records updated how to find that?

Wipro,

4 13620

what is parameterset?

Wipro,

4 11167

j1,j2,j3 jobs r runing iwant to run j1,j3 after j2 how to do this using sequencer? 2)j1,j2,j3 jobs r runing iwant to run j1,j2,j3 how to do this?

Wipro,

1 6858

8000 jobs r there i given commit, suddenly job will abort? what happens? 2)diff b/t transformer stage & filter stage? 3)how to load the data in the source?

Wipro,

2213

How to create a file using vi editor? 2)how to delete a file in vi editor? 3)How to connect the server datastage to unix? what r the command lines we r using? 4)30 jobs r runnig in unix i want to find out my job. how to do this? give me command?

Wipro,

2621

1) In a dataset how to delete a single row? 2) i have 50 rows , i want to display 5-7 records only? How to write the sql query? 3)i have 40 rows,i want to display last row? write sql query?

Wipro,

7 19949

1)s.key generate 1 to 700 records today. tomorrow another 400 will updated how to update the records using s.key generator? 2)source is like :-- DB --> T/F stage1 --> seq1file T/f 1 is linking with T/F2 ---> seq 2 how to load the data? in source i given some conditions those r going in seq1. The another data will going to seq2 how to do this ?

Wipro,

2025

I have source data like this col1 col2 col3 5 3 8 6 2 9 7 1 10 and i want to get target as col1 col2 col3 5 1 8 6 2 9 7 3 10 which transformation i have to use and how?

3 6527

Hi, source data is col1 values are 5,6,7 col2 are 3,2,1 col3 are 8,9,10 and i want to get target as col1 5,6,7 col2 1,2,3 col3 8,9,10 how to do this one?

6 8903

If the Hi-rarchies are not defined in the universe level .Is it possible to do in the report level?

Infotech,

3 6386

Can we get the data from two different databasess in reporting level?

Infotech,

1 5994

What is the pivot option ? what is the need of it?

Infotech,

1 4855

How maually can i define ? If thousends of records exists in a table?

Infotech,

1 4882

Is it mandatory to give a cardinality ? If cardinality is not given what will happen?

Infotech,

4 11337

Can i use personal database connection to the Webintellegence reports?

Infotech,

1 4445

Un-Answered Questions { Data Warehouse }

Explain what are fact, dimension, and measure?

995

Explain Quality stage?

1162

What do you mean by caching in teradata?

1066

How many areas for files does datastage have?

1156

How an expression transformation differs from aggregator transformation?

1046

What are the special input delimiters used in SAS?

1188

Explain about a task that really tested your analytical abilities?

1256

draw informatica architecture 8.6 ?

3877

How we can decided drilling options for an attribute?

986

Differentiate between source qualifier and filter transformation?

1584

Why teradata is used?

1011

What are the components of datastage?

1124

what are passthrough functions?

962

can we override a native sql query within informatica? How do we do it?

1132

Can you explain tagbatch restructure operator?

1184

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