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Data Warehouse General Interview Questions
Questions Answers Views Company eMail

Difference between slicing and dicing with example?

 2 16622

waht is the advantage of infoset query

iGate,

1894

what is the diffrence between psa and idoc

iGate,

1714

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

ASD Lab, IBM,

1 5673

Compare and contrast aggregates & indexes

IBM, TCS,

3341

Compare aggregates and data marts

TCS,

2275

what role views play in dimensional modeling?

TCS, Zensar,

1 5142

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

HSBC,

3 7763

what are the all possible features supported modify stage?

 1609

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,

2049

in general which algorithms for used?

 1547

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 6755

what is hybrid schema

TCS,

4 15087

How many ways we test the universe & Report?

 2 5039

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

TCS,

1 8628

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Un-Answered Questions { Data Warehouse General }

What are the different models used in cluster analysis?

510

What is aggregate fact table?

529

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

2049

What is index awareness in universe?

573

What is called dimensional modelling?

574




What is the goal of optimizer?

584

Explain the importance of data warehouse?

568

What is the difference between a primary and secondary actor in use case modeling?

578

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

520

What are the types of SCD?

627

What is the function of surrogate key in data warehousing?

631

Explain what is type 2 version dimension?

601

What is a relationship?

570

What is mean by aggregate aware?

540

Explain difference between data ware house & data mart?

520

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