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Multi Level BOM

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  • Multi Level BOM

    I have designed a Preventative Maintenance Application, but one of the remaining limitations is that it has only a single level BOM.

    I know that I need to change it to a Multi Level BOM to be truly useful, but have not been able to build this in Alpha 5 yet.

    Has anyone information on the technique, or a sample application, on how to structure and build a multi level BOM (Bill of Materials) in Alpha Five?

    Andy Sigrist

  • #2
    Re: Multi Level BOM

    Just trying to help!

    This may get better coverage if you post your thread in the proper place. I/we don't know what version of alpha or if it is web based or desktop?
    Dave Mason
    dave@aldadesktop.com
    Skype is dave.mason46

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    • #3
      Re: Multi Level BOM

      Dave,

      thanks for the suggestion. I will post it in another forum.

      Andy

      Comment


      • #4
        Multi Level BOM (Bills of Materials)

        I created a Preventative Maintenance Application, but one of the remaining limitations is that it has only a single level BOM.

        I know that I need to change it to a Multi Level BOM to be truly useful, but have not been able to build this in Alpha 5 yet.

        The application is written in A5 V10 for the desktop and Web application. It is mostly used as a desktop application by customers.

        Has anyone information on the technique, or a sample application, on how to structure and build a multi level BOM (Bill of Materials) in Alpha Five?

        Andy Sigrist

        Comment


        • #5
          Re: Multi Level BOM (Bills of Materials)

          Hi Andy
          Since a BOM itself is the lowest level schedule resulting from a materials management system - if one looks at it from the POV of the factory/equipment/machinery/finished goods etc being the top.
          If the multi-levels you refer to is subdivisions of some kind, that indicates a component of the data at whichever level.
          If they are sub-assemblies then it involves different technology, perhaps reticulation.
          Give some detail of what you mean by "multi level" and where the current system is failing.

          Comment


          • #6
            Re: Multi Level BOM

            Originally posted by DaveM View Post
            This may get better coverage if you post your thread in the proper place. I/we don't know what version of alpha or if it is web based or desktop?
            This is the proper place. But you're right, we do need to know if it is desktop or web.
            Peter
            AlphaBase Solutions, LLC

            Peter@AlphaBaseSolutions.com
            https://www.alphabasesolutions.com


            Comment


            • #7
              Re: Multi Level BOM

              Here are some ideas ---

              Three tables gets you a basic BOM:

              WorkOrder ---< WorkOrder Items ----< WorkOrder SubItems

              More complex you add a traveler table - this table would detail the movement of each part through the shop:

              traveler_status_table (this would be fired by a stored procedure or xbasic in A5)

              You could also create a table full of standard build / repair items:

              WorkOrder SubItems --- < subItems_has_Process >---- WorkOrder_Process

              Michael Carroll

              Comment


              • #8
                Re: Multi Level BOM

                My application is mostly used as a Desktop application, currently in A5 V 10.5. I do have a web interface as well that some customers use. Screenshots of the application can be found at www.promaintainer.com.

                The Multi Level BOM I am looking for is similar to what SAP or other ERP systems would used. It is a hirarchical tree of a finished good items consisiting of individual parts and subassemblies. Parts are assembled into subassemblies. Finished food is built from a combination of parts and subassemblies.

                An analagy could be a food recipe system. A completed food item product requires a BOM. It includes individual ingredients, but also pre-prepared items (sub-assemblies) for sauces etc. Sugar may be used in a sub-assembly, but also as a direct ingredient in the final product.

                The way I approached it so far is to:
                - created a table called ITEMS. Any part, subassembly or finished good - in short anything - is an item.
                - created a set called BOM consisiting of a BOM header and one-to-many linked BOM Item
                - each BOM by itself is single level, but BOM items can include items such as sub-assemblies that are have in turn their own BOM. This is the multi-level part.

                This approach works for me so far and is based on a an ERP system (Made-to-Manage) that I am also familar with. My largest problem at this point is the ability to display on the screen or print the multi level BOM.

                I may be on the right track and just need some help on how to display and print the hirarchical tree, or there may be a better approach to this.

                If anyone has done a similar application or insights, I appreciate all help with this.

                Andy

                Comment


                • #9
                  Re: Multi Level BOM

                  This takes me back...
                  No doubt there are many ways to tackle this but let me offer the following as a solution that I have used.
                  In my case everything was made from bought items. I start by assigning a "level" to every part as follows:
                  Let's assume you have a table that all parts are recorded in and call that table Items. In here parts are flagged as bought Y/N.
                  Parts that are Bought=Y are automatically level 1 and all other parts are initially set to level = 0.
                  Now cycle thru the BOM's line items of Parts where level = 0. When you find a BOM where all components are level = 1, then the level of that parent part is 2, which is then set accordingly in Items. After passing through all parts, if there are any parts still with level = 0, then cycle thru again and when you find a part made from items with level > 0 then that part is level 3. You just keep going until there are no parts in Items table with level = 0. In my case we had went to level = 7.

                  Now that every part has a level, when you want to print a BOM you can use the level of the top level part and cycle thru the BOM of each assembly/subassembly until you get down to only bought items (level 1). You write a record for each part into a temp table with a calculated "list order" field that you eventually use to sort the parts for printing or displaying on screen as a heirarchical tree. Calculating the "list order" requires some clear thinking but hopefully I have provided enough info to point you in the right direction.
                  Last edited by Garry Flanigan; 09-20-2011, 02:42 AM.

                  Comment


                  • #10
                    Re: Multi Level BOM

                    Garry,

                    thank you for the detailed explanation, I will try it over the next few days alongside another attempt that I am working on. I will post feedback here as soon as I have more questions or can share my solution with you and everyone else that may be insterested in this.

                    Andy Sigrist

                    Comment

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