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alpha5 active-link table

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  • alpha5 active-link table

    Hello All,

    I was wondering if anyone knows if it is possible to create an active-link to a table from one alpha database to another? I have two seperate alpha5 databases and when I have one open I just want to be able to read from a table in another database to create a report.

    I know I can combine all the tables under a common directory but I really want to keep them separate.

    Thanks for any advice.
    -Bob

  • #2
    Re: alpha5 active-link table

    Yes you can
    You can always read from a table in another adb as long as it is not encrypted and a few other things people sometimes do and even then, it mostly possible.

    You can read information from a table in any folder.
    Dave Mason
    dave@aldadesktop.com
    Skype is dave.mason46

    Comment


    • #3
      Re: alpha5 active-link table

      Thanks for the response. I don't see how a link can be made though - there is no option for an alpha5 table. Could you explain how to do this .

      Thanks,
      Bob

      Comment


      • #4
        Re: alpha5 active-link table

        Bob
        Are both tables dbf?
        Al Buchholz
        Bookwood Systems, LTD
        Weekly QReportBuilder Webinars Thursday 1 pm CST

        Occam's Razor - KISS
        Normalize till it hurts - De-normalize till it works.
        Advice offered and questions asked in the spirit of learning how to fish is better than someone giving you a fish.
        When we triage a problem it is much easier to read sample systems than to read a mind.
        "Make it as simple as possible, but not simpler."
        Albert Einstein

        http://www.iadn.com/images/media/iadn_member.png

        Comment


        • #5
          Re: alpha5 active-link table

          Originally posted by rjf View Post
          Thanks for the response. I don't see how a link can be made though - there is no option for an alpha5 table. Could you explain how to do this .

          Thanks,
          Bob
          You don't need a link. I'm not sure what you mean by "read from a table in another database to create a report". You can reference any table in any location by specifying the full path to the table. You can create a set where the parent is in the current database and the child is not.
          There can be only one.

          Comment


          • #6
            Re: alpha5 active-link table

            Originally posted by Stan Mathews View Post
            You don't need a link. I'm not sure what you mean by "read from a table in another database to create a report". You can reference any table in any location by specifying the full path to the table. You can create a set where the parent is in the current database and the child is not.
            OK - great, I see how you can create a set. I had tried it previously and got an error about the table being bound to another database but I now see that was because of my security settings.

            Thanks!!

            Comment


            • #7
              Re: alpha5 active-link table

              Two other notes.

              You can add a table in another directory to any number of databases.

              You can add a table in another directory to the desired database, create a mapped table with any/all field, drop the "real" table from the database. The mapped table still performs.
              There can be only one.

              Comment


              • #8
                Re: alpha5 active-link table

                Originally posted by Stan Mathews View Post
                Two other notes.

                You can add a table in another directory to any number of databases.

                You can add a table in another directory to the desired database, create a mapped table with any/all field, drop the "real" table from the database. The mapped table still performs.
                How would you add a table from another directory? Is the table updated from both databases - that would sound like an active link??

                Comment


                • #9
                  Re: alpha5 active-link table

                  You can use FILE_ADD_TO_DB() and FILE_DROP_FROM_DB() to add and remove a table or set from any folder you have access to.

                  Comment


                  • #10
                    Re: alpha5 active-link table

                    Just as you would add any table except you navigate to its location.

                    Is the table updated from both databases
                    Yes, but you have the risk of trying to access it at the same time from both. One Alpha instance won't know what the other is doing.

                    Though it is best practice to keep all tables for a database in the same directory it is not a requirement. A table could be added to many databases., or none. If a table is used solely as a source for a lookup, for example, and the full path is specified in the lookup epresssion, then there is no need to have it be part of a database.

                    One reason to keep all the database tables and sets in one directory is portability. Much easier to copy one directory to a different location, especially a different machine, than it is to recreate the same relative directory structure on a different machine and copy scattered files.
                    Attached Files
                    Last edited by Stan Mathews; 03-07-2014, 11:34 AM.
                    There can be only one.

                    Comment


                    • #11
                      Re: alpha5 active-link table

                      Originally posted by rjf View Post
                      How would you add a table from another directory? Is the table updated from both databases - that would sound like an active link??
                      By definition, an active linked table is a connection to a non DBF table.
                      Al Buchholz
                      Bookwood Systems, LTD
                      Weekly QReportBuilder Webinars Thursday 1 pm CST

                      Occam's Razor - KISS
                      Normalize till it hurts - De-normalize till it works.
                      Advice offered and questions asked in the spirit of learning how to fish is better than someone giving you a fish.
                      When we triage a problem it is much easier to read sample systems than to read a mind.
                      "Make it as simple as possible, but not simpler."
                      Albert Einstein

                      http://www.iadn.com/images/media/iadn_member.png

                      Comment


                      • #12
                        Re: alpha5 active-link table

                        Originally posted by rjf View Post
                        How would you add a table from another directory? Is the table updated from both databases - that would sound like an active link??
                        It's not an active-link table as Al says. A-L is for sql and so forth.

                        To add another dbf table from a different location, from the controlpanel click on the big green + icon and then navigate to your location.
                        Peter
                        AlphaBase Solutions, LLC

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


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