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A database app

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  • tomyT tomy

    Hi,

    It will be the first time I'm going to be familiar with creating a database app. (If I'm correct by calling it this way!)

    I'm trying to practice this section of that book, the Adapting Data section without the proxy part of it.

    What kind of project (classes and templates) should I use for making the example work please?
    Thanks.

    Venkatesh VV Offline
    Venkatesh VV Offline
    Venkatesh V
    wrote on last edited by
    #3

    @tomy
    Hi,
    I would prefer you to refer the book examples itself, there you will get step by step database control flow.

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    0
    • mrjjM Offline
      mrjjM Offline
      mrjj
      Lifetime Qt Champion
      wrote on last edited by mrjj
      #4

      Hi
      I can highly recommend
      http://sqlitebrowser.org/
      for looking into the db, running sql on it and learn sqlite.

      tomyT 1 Reply Last reply
      5
      • Pablo J. RoginaP Offline
        Pablo J. RoginaP Offline
        Pablo J. Rogina
        wrote on last edited by Pablo J. Rogina
        #5

        @Venkatesh-V maybe I'm wrong but it looks there's no examples for

        I'm trying to practice this section of that book

        have you tried them yourself?

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        • K koahnig

          @tomy

          I suggest that you have a look to the SQL examples as part of Qt distrbutions. Since they are typically ready for direct use, you can start with them and adapt to examples, if you still have the desire to do so.

          tomyT Offline
          tomyT Offline
          tomy
          wrote on last edited by
          #6

          @koahnig
          They are too advanced, not good for a beginner of that. But thanks. By the way, it doesn't show what template/classes are to be used.

          mrjjM Pablo J. RoginaP 2 Replies Last reply
          0
          • tomyT tomy

            @koahnig
            They are too advanced, not good for a beginner of that. But thanks. By the way, it doesn't show what template/classes are to be used.

            mrjjM Offline
            mrjjM Offline
            mrjj
            Lifetime Qt Champion
            wrote on last edited by
            #7

            @tomy
            You can just use a default widget GUI project.
            The samples are just fragments. Not complete samples. Just shows how to hook
            up model to a view.
            To learn more, read docs for each class

            QListView(this);
            QStringListModel(this);
            QSqlDatabase db
            QSqlTableModel(this);

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            • tomyT tomy

              @koahnig
              They are too advanced, not good for a beginner of that. But thanks. By the way, it doesn't show what template/classes are to be used.

              Pablo J. RoginaP Offline
              Pablo J. RoginaP Offline
              Pablo J. Rogina
              wrote on last edited by
              #8

              @tomy and what about reading this SQL programming guide from Qt?

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              • mrjjM mrjj

                Hi
                I can highly recommend
                http://sqlitebrowser.org/
                for looking into the db, running sql on it and learn sqlite.

                tomyT Offline
                tomyT Offline
                tomy
                wrote on last edited by
                #9

                @mrjj
                It seems great but I don't want to go into the details to the DB world. It seems also advanced. I wanted to have a simple db program, or better to say, I just want to practice the example of the book. I'm not interested in db, at east, for now. And since it's part of that book I wanted that.
                Now if possible please tell me the kind of project for the book's example. Would Qt Widgets Applications be right to use for that.

                By the way, I will read the link properly. I may need it for the program I'm involving it (spreadsheet).

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                • tomyT Offline
                  tomyT Offline
                  tomy
                  wrote on last edited by
                  #10

                  I appreciate all of you, but for this step, I'd like to make the example of the book run. And follow the book. Thanks.

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                  • mrjjM Offline
                    mrjjM Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on last edited by
                    #11

                    @tomy said in A database app:

                    a simple db program

                    Well unless you know what a table is, SQL and a little bit of db structure, its not going to be fun.
                    If you dont want to learn about DB, there is no reason to read about Qt DB classes.
                    They help you do DB stuff and if you skip that part, it best just to skip it all.

                    tomyT 1 Reply Last reply
                    0
                    • mrjjM mrjj

                      @tomy said in A database app:

                      a simple db program

                      Well unless you know what a table is, SQL and a little bit of db structure, its not going to be fun.
                      If you dont want to learn about DB, there is no reason to read about Qt DB classes.
                      They help you do DB stuff and if you skip that part, it best just to skip it all.

                      tomyT Offline
                      tomyT Offline
                      tomy
                      wrote on last edited by
                      #12

                      @mrjj

                      If you dont want to learn about DB, there is no reason to read about Qt DB classes.

                      I don't want to say I don't like to learn DB, because I will certainly need it in near/far future. what I say is "at this stage", or for this time.
                      first I need to learn how to run the example (I pointed to at my first post of this thread) and follow the book and some time latter start reading about DB. I'm sure those links offered here are very useful.

                      mrjjM 1 Reply Last reply
                      0
                      • tomyT tomy

                        @mrjj

                        If you dont want to learn about DB, there is no reason to read about Qt DB classes.

                        I don't want to say I don't like to learn DB, because I will certainly need it in near/far future. what I say is "at this stage", or for this time.
                        first I need to learn how to run the example (I pointed to at my first post of this thread) and follow the book and some time latter start reading about DB. I'm sure those links offered here are very useful.

                        mrjjM Offline
                        mrjjM Offline
                        mrjj
                        Lifetime Qt Champion
                        wrote on last edited by
                        #13

                        @tomy

                        ok. but unless you make a table with data, it will be impossible to see if it works as nothing would be shown. :)

                        Also , those samples are incomplete as it seems to be from some other part.
                        the variables are not defined there, only shown so there will be extra work to make it run
                        unless there is the rest of it.

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                        • tomyT Offline
                          tomyT Offline
                          tomy
                          wrote on last edited by
                          #14

                          OK and thank you. So I skip that section.

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                          • Pablo J. RoginaP Offline
                            Pablo J. RoginaP Offline
                            Pablo J. Rogina
                            wrote on last edited by
                            #15

                            @tomy Please don't forget to mark your post as "Solved" if you're done with the DB topic...

                            Upvote the answer(s) that helped you solve the issue
                            Use "Topic Tools" button to mark your post as Solved
                            Add screenshots via postimage.org
                            Don't ask support requests via chat/PM. Please use the forum so others can benefit from the solution in the future

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