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  1. #1
    brharrii's Avatar
    brharrii is offline Advanced Beginner
    Windows XP Access 2010 64bit
    Join Date
    Jun 2012
    Location
    Seattle, WA
    Posts
    63

    Many-to-Many Self Join

    Hi all, I'm working on Access 2010, I'm a limited Experience administrator, trying to learn this stuff as I go.



    The database I'm working on is a product Database. It keeps track of everything we produce (imagine that).

    The issue I'm having deals with a need for a recursive, or "self-join" relationship that is connected with a many-to-many structure capability. I need to be able to identify a list of all parent items that could be used to create the current product.

    Our products go through various phases starting with the Incoming Product and ending with the Finished good. The product name and ID from each phase need to be visible from every subsequent product spec. Below is a sample flow chart of the development of a product.

    Incoming-|---Work in---|--Finished
    Product---|---Progress--|--Product

    A ---------->B ------>C -------> D

    G ---------->H ------>C -------> D

    E ---------->F ------>C -------> D

    I need to be able to pull up product C for example, on my form and be able to see that we are able to arrive at product C either by taking Product A and turning it into product B and then turning it into Product C, or by doing the same thing to Product G or Product E.

    I hope that makes sense.

    tblProductInfo
    - ProductID
    - ProductDesc
    - RawMaterial (somehow needs to show a list of all the parent ProductIDs and ProductDescs)

  2. #2
    June7's Avatar
    June7 is offline VIP
    Windows XP Access 2010 32bit
    Join Date
    May 2011
    Location
    The Great Land
    Posts
    53,630
    How to attach file: http://www.accessforums.net/showthread.php?t=70301 To provide db: copy, remove confidential data, run compact & repair, zip w/Windows Compression.

  3. #3
    brharrii's Avatar
    brharrii is offline Advanced Beginner
    Windows XP Access 2010 64bit
    Join Date
    Jun 2012
    Location
    Seattle, WA
    Posts
    63
    Thank you very much, I'll go through these

Please reply to this thread with any new information or opinions.

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