Is MDM a tool to design a Data ware house or Database?

Hi
Is MDM a tool to design a Data ware house or Database . Is it an ETL.?
Actually what do you design in the repository? Does it follow any schema ? where does the data get stored?
would i load the data into MDM?
what do i design for?
I understood the usage of MDM & The differnce between SAP BI that MDM is for Master data
and BI is for both Master and Transactional data and a lot more...
I would really appreciate your help.
Thanks and regards
Novino

Hi Novino
Suggest you to read the reference guides on MDM, will answer most of your queries.
What is the name of the Schema ? as you mentioned.
Is it Star Schema, snow flake schema or extended star schema? or any other?
MDM can use any schema file custom or SAP standard IDoc structure. Star or snow flake schema are database design principles. You can store any xsd file as valid schema in MDM which contains information about the data type and field name,meta data etc in MDM repository.
Could you pls let me know to What could be the prerequisites interms of knowledge to design a repository?
Do i have to be specialized in any data base designing?
This is most important job Data modeling. You need to understand the master object considered and the business needs or processes which will be supported by MDM. Use Data Manager reference guide, that will equip you with Data modeling.
do i have know xml, abap as well to work on MDM?
Not necessarily but if you know them it adds value while working on integration scenarios of MDM like Consolidation and Harmonization of data.
Hope it helped.
regards
Ravi

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psi have also asked this question here [http://stackoverflow.com/questions/4329087/design-pattern-data-loading-solution]

rackham wrote:
Hello all!
I have been working on a few projects which involve loading data, sometimes remotely, sometimes local, sometimes JSON, sometimes XML. The problem I am having is that due to the speed of development and the changing minds of various clients I am finding my designs are too rigid and I would like them to be more flexable. I have been trying to think of a reusable solution to data loading, and would like some advice as I imagine many of you out there have had the same problem.
What I would like to do is to create a generic LoadingOperation abstract class, which has member variables of type Parser and Loader, which have parse() and loadData() methods respectivly. The Parser and Loader classed are interfaces and classes that implement these could be XMLParser and JSONParser, LocalLoader and RemoteLoader etc. With something like this i would like to have a new class which extends LoadingOperation for each thing to be loaded, weather thats a local XML file, or remote JSON, or whatever.
The problem is is that specific Parser implementation cannot return custom data types without breaking the polymorphic behavior of the LoadingOperation class. I have been messing around with generics and declaring subclasses of LoadingOperation like
class SpecificLoader extends LoadingOperation<CustomDataType>
and doing similar things with Parser classes, but this seems a bit weird.
Does anyone have any suggestions on what im doing wrong / could be doing better. I want to be able to react quickly to changing specifications (ignoring the fact that they shouldnt be changing that much!) and have a logical seperation of code etc...That depends on the specifics.
The fact that it seems like processes are similar doesn't mean that they are in fact the same. My code editor and Word both seem to be basically the same but I am rather sure that generalizing between the two would be a big mistake.
And I speak from experience (parsing customer data and attempting to generalize the process.)
The problem with attempting to generalize is if you generalize functionality that is not in fact the same. And then you end up with conditional logic all over the place to deal with differences dependent on the users. Rather than saving time that actually costs time because the code becomes more fragile.
Doesn't mean it isn't possible but just rather that you should insure that it is in fact common behavior before implementing anything.

Is MDM a tool to design a Data ware house or Database?

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