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Migration to SQL

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    Migration to SQL

    I am planning to move my dbf desktop application to continue to work from the desktop but then to be gradually moved to a web based system
    The first stage I will be moving the dbf

    #2
    Re: Migration to SQL

    For some reason my post was cut off, the rest is as follows
    The first stage I will be moving the dbf to sql server & active link
    I will move the tables one at a time and wondered if anyone had written a procedure for this.
    I am sure there is a lot to consider, such as
    Indexes
    Field Rules
    Forms
    Browses
    Reports
    Global scripts writing to native dbf’s
    Any other advice or pointers would be appreciated
    Thanks
    Terry

    Comment


      #3
      Re: Migration to SQL

      [QUOTE=Terrymorgan;750617]For some reason my post was cut off, the rest is as follows
      The first stage I will be moving the dbf to sql server & active link
      I will move the tables one at a time and wondered if anyone had written a procedure for this.
      I am sure there is a lot to consider, such as
      Indexes
      Field Rules
      Forms
      Browses
      Reports
      Global scripts writing to native dbf
      Glen Schild



      My Blog

      Comment


        #4
        Re: Migration to SQL

        Glen
        Your reply only included some of my post
        Thanks
        Terry

        Comment


          #5
          Re: Migration to SQL

          So when you say "gradually move" you are intending to keep the desktop app going until complete? If so I would not use active links and sql tables connected back to the desktop for the reasons I described.
          Glen Schild



          My Blog

          Comment


            #6
            Re: Migration to SQL

            Where can I find the “reasons”, presumably in your Blog but under what heading
            Thanks

            Comment


              #7
              Re: Migration to SQL

              Terry, there is the standard Upsizing option which will create SQL tables from the DBF.
              I have found that using Active Link to be rather slow.
              See our Hybrid Option here;
              https://hybridapps.example-software.com/


              Apologies to anyone I haven't managed to upset yet.
              You are held in a queue and I will get to you soon.

              Comment


                #8
                Re: Migration to SQL

                Hi Ted
                What does upsizing do couldn't find it in the help.
                Thanks
                Terry

                Comment


                  #9
                  Re: Migration to SQL

                  Should be in Tools/Upsize genie.
                  It will take, or attempt to take a table and replicate it in a new workspace.
                  You will need to supply a SQL connection string
                  See our Hybrid Option here;
                  https://hybridapps.example-software.com/


                  Apologies to anyone I haven't managed to upset yet.
                  You are held in a queue and I will get to you soon.

                  Comment


                    #10
                    Re: Migration to SQL

                    I found where to run it from but what does it do with the forms reports browses etc?
                    Do you know where there are any help files / videos so i can fully understand the process.
                    Thanks
                    Terry

                    Comment


                      #11
                      Re: Migration to SQL

                      https://documentation.alphasoftware....opApplications

                      Scroll down to Upsize details. 3 videos.
                      The videos are .swf so should be viewable on a PC
                      See our Hybrid Option here;
                      https://hybridapps.example-software.com/


                      Apologies to anyone I haven't managed to upset yet.
                      You are held in a queue and I will get to you soon.

                      Comment


                        #12
                        Re: Migration to SQL

                        Hmm post did not quite upload as expected. will try again!
                        Last edited by glenschild; 03-06-2020, 10:49 AM.
                        Glen Schild



                        My Blog

                        Comment


                          #13
                          Re: Migration to SQL

                          Originally posted by glenschild View Post
                          Hmm post did not quite upload as expected. will try again!
                          Still haven

                          Comment


                            #14
                            Re: Migration to SQL

                            Active linked connections attempt to bridge the gap between dbf and sql and they come with a performance cost. Also with the aim of moving fully over to web/sql you are not taking advantage of the capabilities of sql and therefore will eventually end up having to re-do everything anyway. That is my experience and is why I don't go down that road. One of my current projects is to convert a desktop application using dbf to a sql based browser system. To do this I am not touching the dbf application. Instead I am doing the following.

                            1. Establishing any required changes/enhancements that are desired/needed (inevitably there always are some!)
                            2. Building a new sql database which includes building views to replace sets.
                            3. Using the export operation in Alpha building and refining a script to export the data from the current system to a new "temporary" sql database. Note that inevitably this will reveal data integrity issues in the old db. Incorrectly formatted dates etc. that can be cleaned up.
                            4. Building migration scripts in sql to migrate the data from the temp sql database to the new sql database.
                            5. Repeat 3 & 4 as often as needed as you refine the structures
                            6. While you are repeating 3 & 4 build the new system module by module.

                            This gives me a measured approach to building the new system systematically and I can almost guarantee that as you go through this progress you will come across ways to improve the data
                            Glen Schild



                            My Blog

                            Comment


                              #15
                              Re: Migration to SQL

                              Thanks, my reason for the active link route is because our servers are being moved to the cloud and although not tested yet I do not believe the desktop app dbf’s will work in the cloud. I will see how it goes.
                              Terry

                              Comment

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