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need interview questions for datawarehousing

Discussion in 'Working Women' started by ashukrishna, Mar 15, 2008.

  1. ashukrishna

    ashukrishna Bronze IL'ite

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    hi frnds...
    can any1 provide me interview questions, any books, links, documents for datawarehousing(informatica, bo,cognos) pls....
    i'm in search of job very seriously as i have to takecare of my family...

    awaiting for ur valuable rpy
    cheers!!!:)
    ashu
     
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  2. Nandshyam

    Nandshyam IL Hall of Fame

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    Dear Ashu,

    Datawarehousing is an ocean. Do you have any SQL experience before.

    Its not a great idea to master of Informatica, Cognos, etc in a single shot. You need to follow a definite path, thats Y.

    First before going into DataWarehousing, you need to have a good knowledge about SQLs and PSQLs. Then got to expertise urself in SQLServer or Oracle or any other DB.

    Anyhoo, Larry Greenfield's site: The Data Warehousing Information Center is a great starting point for general background in data warehousing.

    Few interview type questions:

    1. Tell me about cubes
    2. Full process or incremental
    3. Are you good with data cleansing?
    4. How do you handle changing dimensions?
    5. What is a star-schema?

    Data Warehousing questions:
    1) What is source qualifier?
    2) Difference between DSS & OLTP?
    3) Explain grouped cross tab?
    4) Hierarchy of DWH?
    5) How many repositories can we create in Informatica?
    6) What is surrogate key?
    7) What is difference between Mapplet and reusable transformation?
    8) What is aggregate awareness?
    9) Explain reference cursor?
    10) What are parallel querys and query hints?
    11) DWH architecture?
    12) What are cursors?
    13) Advantages of de normalized data?
    14) What is operational data source (ODS)?
    15) What is meta data and system catalog?
    16) What is factless fact schema?
    17) What is confirmed dimension?
    18) What is the capacity of power cube?
    19) Difference between PowerPlay transformer and power play reports?
    20) What is IQD file?
    21) What is Cognos script editor?
    22) What is difference macros and prompts?
    23) What is power play plug in?
    24) Which kind of index is preferred in DWH?
    25) What is hash partition?
    26) What is DTM session?
    27) How can you define a transformation? What are different types of transformations in Informatica?
    28) What is mapplet?
    29) What is query panel?
    30) What is a look up function? What is default transformation for the look up function?
    31) What is difference between a connected look up and unconnected look up?
    32) What is staging area?
    33) What is data merging, data cleansing and sampling?
    34) What is up date strategy and what are th options for update strategy?
    35) OLAP architecture?
    36) What is subject area?
    37) Why do we use DSS database for OLAP tools?

    Business Objects Popular Q&A:
    38) What is a universe?
    39) Analysis in business objects?
    40) Who launches the supervisor product in BO for first time?
    41) How can you check the universe?
    42) What are universe parameters?
    43) Types of universes in business objects?
    44) What is security domain in BO?
    45) Where will you find the address of repository in BO?
    46) What is broad cast agent?
    47) In BO 4.1 version what is the alternative name for broadcast agent?
    48) What services the broadcast agent offers on the server side?
    49) How can you access your repository with different user profiles?
    50) How many built-in objects are created in BO repository?
    51) What are alertors in BO?
    52) What are different types of saving options in web intelligence?
    53) What is batch processing in BO?
    54) How can you first report in BO by using broadcast agent?
    55) Can we take report on Excel in BO?


    More here:

    Data Warehousing Interview Questions

    Also for individual ones you have links with these names:

    Abinitio Interview Questions
    Analysis services Interview Questions
    Data Warehousing Basics
    BO Designer Interview Questions
    Business Intelligence Interview Questions
    Business Objects Interview Questions
    Cognos Interview Questions
    Data Warehousing Concepts
    BO Data Integration
    DataStage Interview Questions
    ETL Interview Questions
    Impromptu Interview Questions
    Informatica Interview Questions
    MicroStrategy Interview Questions
    Reportnet Interview Questions
     
  3. ashukrishna

    ashukrishna Bronze IL'ite

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    hi nandhu ..
    thanx a lot for ur valuable rpy...Bow
    i have wrkd with sql n little oracle... jus like a beginers level...
    but i have deep intrest in tis line...
    unfortunately.. i had no way to proceed ... nw i plan to takeup a course on dwh from ny institute...'ll tht wrk...
    pls rpy
    chers!!!:)
    ashu
     
  4. Padma3

    Padma3 New IL'ite

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    hi ashu .. if you are still looking for job in Business Intelligence tools side or in which specific area in datawarehousing? so we can discuss about it further.
     
  5. Saahithya

    Saahithya Silver IL'ite

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    Ashu

    hope you got the required information. If not try this site geekinterview.com...it has questions related to lot of technologies.
     
  6. ashukrishna

    ashukrishna Bronze IL'ite

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    dear padma...
    rite now i'm looking for informatica
    ya... sure we 'll discuss...
    cheers...!!!:)
    ashu
     
  7. ashukrishna

    ashukrishna Bronze IL'ite

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    hi saahithya...
    thanx a lot for your valuable reply...
    sure 'll do it...
    cheers...!!!:)
    ashu
     
  8. datawarehousing

    datawarehousing New IL'ite

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    Hey guys..my advice don't depend on the interview question,all u have to do is to read the whole book throughly with goof logical reasons,that makes us a better person,to know more about datawarehousing visit our site.
     
  9. pavuluris

    pavuluris Senior IL'ite

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    Ladies,

    I have been working in the DWH/BI fields, for quite sometime now. Please feel free to let me know if i can be of any help.

    Take Care,
    --Sireesha.
     
  10. melina386

    melina386 New IL'ite

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    nice discussion and thanx for posting
     
    Last edited by a moderator: Jan 13, 2010

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