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Database Design The Basics - Still Learning

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  • Database Design The Basics - Still Learning

    Lookups
    I have searched the threads on here but cannot find the answer. I see a lot of reference to lookups where one field is selected and other values are placed in other fields as a result.

    I want something more simple, rather than a simple 'list' embedded in a form I want to use an external database to provide the list (so the values can be user amended) - the external DB is just a one field list. I want a popup box or similar when I enter the field to list the values and one can be selected. How do I go about this, I just cannot seem to get the syntax right in rules/field lookup.

    Calculations
    In a calculated field, a date, for record creation and updated fields.

    Created Date - I am using date(), but what function to achieve this - if the date field is empty (ctod("")) then date() else nochange.

    Update Date - How do I test if an actual update has taken place rather than someone just entering a record and making no changes?

    i.e. if no changes made then leave the date in the updated field as it is else a change has been made so change the date to today.

  • #2
    Re: Database Design The Basics - Still Learning

    Hello Paul,

    For the lookup:
    Create a new one filed table, inside your application/database. There are a few ways to have a user add data to the one field table. If you like, you can make a simple form to input data into the table,edit it, etc.

    Now go to field rules for the other field in the table you want the lookup for.
    See the attached JPG. It is the Lookup tab in field rules for the field you want the lookup for. At the first dropdown select "table lookup".
    There are variouse options on this tab. You can use your own designed form, or use a Alpha default form to Enter, Edit, Etc. data in your new lookup table.

    Let the board know if this get you off to a good start for the lookup table.

    Regards

    Ed

    Comment


    • #3
      Re: Database Design The Basics - Still Learning

      Hi Paul

      For the record creation and update fields, suggest you consider following Cal Locklin's excellent advice in post No 5 of this thread.
      Kind Regards
      Alan

      Comment


      • #4
        Re: Database Design The Basics - Still Learning

        Thanks Ed, I was nearly there, but was missing out the source/fill fields in the definition. Blindingly obvious now :-(


        Originally posted by Ed Barley View Post
        Hello Paul,

        For the lookup:
        Create a new one filed table, inside your application/database. There are a few ways to have a user add data to the one field table. If you like, you can make a simple form to input data into the table,edit it, etc.

        Now go to field rules for the other field in the table you want the lookup for.
        See the attached JPG. It is the Lookup tab in field rules for the field you want the lookup for. At the first dropdown select "table lookup".
        There are variouse options on this tab. You can use your own designed form, or use a Alpha default form to Enter, Edit, Etc. data in your new lookup table.

        Let the board know if this get you off to a good start for the lookup table.

        Regards

        Ed

        Comment


        • #5
          Re: Database Design The Basics - Still Learning

          Thanks for the link.

          Originally posted by Citadel View Post
          Hi Paul

          For the record creation and update fields, suggest you consider following Cal Locklin's excellent advice in post No 5 of this thread.

          Comment


          • #6
            Re: Database Design The Basics - Still Learning

            Hey Paul,

            If it wasn't for this excellent Message Board(with the generous time and excellent knowledge of various persons), I would have not gotten any where myself, over the last few years.

            For myself, I sure do a lot of reading of different posts.....

            Have a good one..

            Regards

            Ed

            Comment

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