[Mondrian] Comparation with Palo

[Lin Chun]

Thanks charly
as you mentioned:"Palo save data directly in the server" as  a data
warehouse?
So if use mondrian , is it better to use a DW(like Infosight or Bizgres) to
build the multi dimensional table first
in order to increase performance?

Regards




2009/3/20 Charly CLAIRMONT <charly.clairmont at altic.org>

> Hi all !
>
> Just to make a little answer about differences  between Palo and Mondrian.
>
> Firstly, it's not the same approach. In OLAP technologie you have :
>  - ROLAP, like Mondrian, the engine is based on a relational database to
> expose dimensions
> http://en.wikipedia.org/wiki/ROLAP
>
>  - MOLAP, like Palo, the engine has is own data storage and save data
> directly in dimensional aspects...
> http://en.wikipedia.org/wiki/MOLAP
>
> You also have HOLAP... and hybrid approach...
>
> You have to pay attention about Palo if you store too many data inside a
> cube... In a relational database you don't ask you this question...
>
> Cheers...
>
> 2009/3/20 Lin Chun <franks1984 at gmail.com>
>
>> hi
>> I am a newer to open source BI. For the last days I've done some reseach
>> in
>> OSBI for finding a BI solution. Now I'm studying in OLAP server , while
>> these are too projects Mondian and palo, but I cannot find any comparation
>> between them in technique point of view also in bussiness point of view~
>> Looking forward to your answers,Thanks
>>
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>>
>
>
> --
> -- -- -- --
> CCharly
>
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-- 
-------------------------
Lin Chun
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