Data Modelng with hierarchy??

Hi Gurus,
I am working with Infosets and many of these infosets have the following joins below. EngMDlNbr to Product Code to Summary product Code and Product main group
All these Master Data are loaded from flat files.
Product Hierarchy:
Char 1: EngMdlNbr:
       1. EngMdlNbr
          2. Product Code
       3. Many othe characteristics
Char 2: Product Code
       1. Key-Product Code
          2. Summary product Code
Char 3: Summary Prod Code
       1. Key-Summary product Code
          2. Prod Hierarchy level
       3. Product Main Group
Char 4: Product main Group
       1. Key-Product Main Group
          2. Prod Hierarchy level
Please clarify whether the performance of the queries will improve if I reduce these Joins by building
1) Hierarchy at Product Code and include (Summary Prod Code and prod main grp) or
2) By including Summary Prod Code and prod main grp as Attributes in Product Code Characteristics.
If I use Hierarchy, how will I load the data with hierarchy information.
Please advice.
Thanks and Regards
Andy

Hi
Just check how the component hierarchy is maintained because if hierarchy maintained properly then your report will come out properly.
When transaction data coming from ECC hierarchy key filed contains your parent and child relationships.
Regards
Jagadeesh

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