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Data Warehouse General Interview Questions
Questions Answers Views Company eMail

Difference between slicing and dicing with example?

 2 16605

waht is the advantage of infoset query

iGate,

1888

what is the diffrence between psa and idoc

iGate,

1708

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

ASD Lab, IBM,

1 5665

Compare and contrast aggregates & indexes

IBM, TCS,

3338

Compare aggregates and data marts

TCS,

2265

what role views play in dimensional modeling?

TCS, Zensar,

1 5127

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

HSBC,

3 7746

what are the all possible features supported modify stage?

 1602

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,

2043

in general which algorithms for used?

 1541

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 6738

what is hybrid schema

TCS,

4 15065

How many ways we test the universe & Report?

 2 5026

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

TCS,

1 8616

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Un-Answered Questions { Data Warehouse General }

What is Active Datawarehousing?

554

What is dimension modeling?

525

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

646

What is aggregate fact table?

521

How to add a number to a macro variable?

543




Why is chameleon method used in data warehouse?

684

What is the difference between junk dimension and degenerated dimension?

552

What is ods (operation data source)?

545

How to create different types of templates?

508

Explain a mapping, session, worklet, workflow, mapplet?

588

What are the fundamental elements of the data warehouse?

484

How to eliminate duplicate rows from flat file?

500

Explain the main difference between inmon and kimball philosophies of data warehousing?

546

What are the different types of join operations?

552

Explain grouped cross tab?

2185

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