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BW ESTIMATION MODEL- Effort Estimate

Hi Gurus,

As i am creating a BW estimation model I have put the following effort for complexities for differnt tasks. Please suggest if you think the estimation should be differnt to what I have estimated as I am a rookie in these area.

Complexity(in Man Hrs)

Type High Medium Low

Set up Technical Enviroment 16 12 8

Define Source System 24 18 11

Define Extract Structure 24 18 8

Define Info Object 5 2 1

Data Staging 16 12 8

Transformation and Mapping 24 16 8

Build/Activate Data Targets 16 12 8

Define/Update Update Rules 24 16 8

Reports 24 16 8

Process Chains 24 16 8

Thank you so much for your help in advance.

Regards,

Sanjeev

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  • Best Answer
    author's profile photo Former Member
    Former Member
    Posted on Oct 04, 2005 at 09:26 AM

    Hi Sanjeev,

    In my opinion

    Define Extract Structure 24 18 8

    (refine it whether you are creating a generic extractor or just activating business content datasource, if generic extractor then the complexity could be based on the number of tables, fields)

    Build/Activate Data Targets 16 12 8

    (segregate based on ODS, Infocube, Multicube)

    Process Chains 24 16 8

    (may need more time)

    For all the above acitivities, are you including the time for design, development, testing, transportation (not as simple as R/3), documentation.

    If you have included the time for all the above, I think the time is convservative and based on the activities you should relook at the same by a factor of 1.5 to 2 depending on the object type.

    Hope it helps.

    Cheers

    Anurag

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  • Posted on Oct 04, 2005 at 09:57 AM

    Hi Sanjeev,

    IMHO:

    - Define extract structure (I assume that there is datasources building also) - in case of generic DSs 24 hrs is definitely to little. May take several weeks.

    - Define info objects - depends on the IOs number - if they are several hundreds then it will take mucn more than 5 hrs.

    - Setup tech environment (BW installation?)- takes up to a week.

    - Reports - completely depends on the complexity of reports, their number and their formatting - in case of 100+ complex reports in Excel with formatting in VBA - may take several months!

    Best regards,

    Eugene

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