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

Data Warehouse General Interview Questions

Questions Answers Views Company eMail

Difference between slicing and dicing with example?

2 17733

waht is the advantage of infoset query

iGate,

2361

what is the diffrence between psa and idoc

iGate,

2272

Can we have more than one time dimensions in a Schema(Star or Snowflake)

ASD Lab, IBM,

1 6402

Compare and contrast aggregates & indexes

IBM, TCS,

3775

Compare aggregates and data marts

TCS,

2765

what role views play in dimensional modeling?

TCS, Zensar,

1 5917

how to calculate sum(sal) with out using aggregator satge

HSBC,

3 9265

what are the all possible features supported modify stage?

2136

what is the synchonus? wht is the diff between synchronous and asynchronous what is the diff between v1 and v2 v3 delta modes in sap ecc

IBM,

2500

in general which algorithms for used?

2026

Hi Guys, I have been to L& T last week ..Please find the questions mentioned below 1)Slowly changing dimension types 2)DML statement 3)DDL statement 4)write a syntax to create database 5) differences between count(*) and count(column) 6) differences between union and union all 7) what is decode 8) what is NVL 9) Arrange the values in ascending order 10,5,20,15,null 10)Primary and surrogate key 11)what is group by clause does? 12)what is difference between truncate and delete 13)what is difference between OLAP and OLTP ? 14)Architecture of Datawarehouse 15)how do you test the data validation from source as (flat file and xml) to staging tables. 16)what is shedule and time bound the mentioned above question asked in two rounds.all the best

L&T,

2 7910

what is hybrid schema

TCS,

4 16639

How many ways we test the universe & Report?

2 6105

In datastage can ve find the job based on source table name ??

TCS,

1 9444

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Un-Answered Questions { Data Warehouse General }

What are cluster analysis in data warehousing?

1107

Why denormalization is promoted in universe designing?

987

What are the different ways to represent the loading of dimension tables?

935

What is the difference between power center and power mart?

1021

Explain which columns go to the fact table and which columns go the dimension table?

927

Explain the difference between view and materialized view?

940

Explain grouped cross tab?

2626

Explain what are data marts?

1120

What is VLDB?

1056

Explain differences between star and snowflake schemas?

1154

What is loop in data warehousing?

1140

What is the difference between er modeling and dimensional modeling?

1148

Explain what are the vaious etl tools in the market?

942

What is the definition of cube in datawarehousing?

992

What is Analysis Services?

2141

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