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Data Warehouse Interview Questions
Questions Answers Views Company eMail

what are all the deliverables of ETL informatica power center project? what are all updated or created by etl developer as his everyday activities?

 1765

How to create the list file having millions of flat files while indirect loading in informatica? In indirect file loading, suppose we have less no.of flat files then we can enter files names manually in list file creation. If millions of files are there, how can we enter the flat file names in list file?

HP,

1449

In indirect file loading, suppose we have less no.of flat files then we can enter files names manually in list file creation. If millions of files are there, how can we enter the flat file names in list file?

HP,

1 2402

Some flat files are there, out of these having some duplicate. How do you eliminate duplicate files while loading into targets?

IBM,

1309

There are 10 flat files; out of 10 files 1 file is empty. How do you identify the empty file? How can you load all files into targets?

Accenture,

1 2578

How do you join more than 3 flat files in informatica?

ITC Infotech,

1 2421

Useful UNIX commands regular/frequently used

Deloitte,

1 3598

How to write the query . eid enm doj dob i want to display the names who worked more than 25 years .

 1262

How to convert IBM Cognos generated XML to a readable XML format for ETL tools

 1 1822

(1) Is it possible to create measures using objects from different context. (2) If cross context measures are not possible then what about @aggregate_aware() function ,here we use objects from different contexts. (3)Two measures from two different context ,can they be summed at report level.

 990

what is repositery?

IBM,

1285

Why the workflow is failed after running two hours in informatica?

GE,

1 2117

In work load management there are three options of Low priority, Medium priority and High Priority Jobs which can be used for resource management. why this feature is developed when there is already jobs prescheduled by scheduler or autosys. what will be the use of workload management then?

 1037

if a variable contain dates like "2015/01"---"2015/12" (yymm) ,How to add day to those dates,if them month is jan then 31 if the month is feb then 28 so on ...

Accenture,

932

What's the difference between VAR A1 - A4 and VAR A1 - A4?

Quintiles,

1 4033

Un-Answered Questions { Data Warehouse }

Explain the difference between oltp and olap?

675

if we have a delimiters at unwanted places in a flat file how can we over come those.

1560

What are the types of views in datastage director?

1235

what is the difference between filter and condition?

597

Explain input and put function?

635




What are the various transformation available?

558

What is the function of cognos dispatcher?

582

What are the advantages and disadvantages of using stored procedures versus calling sql inline in cold fusion?

561

What are the major challenges you faced while creating the rpd?

486

Is there any way to read the ms excel datas directly into informatica?

541

Explain what are the different types of data warehousing?

508

In abinitio, what types of parallelism are used?

583

What are vldb properties in microstrategy?

573

Explain clustering algorithm?

1842

How can you use an Oracle sequences in Informatica ? You have an Informatica sequence generator transformation also. which one is better to use?

1825

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