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Miguel Jr

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Posts posted by Miguel Jr


  1. In fact, after some setbacks, the problem may be in the operating system. The system I used in this virtual machine was Windows 8. Everyone knows that when Windows 8 came out, it was full of errors that Windows 8.1 corrected. I still haven't been able to run it with Windows 8.1. I still have to do that. I also have the original Windows DVD and serial number. In other words, I have a copy of the original Windows 8, but not Windows 8.1. And Microsoft has made the download unavailable on its website. I'm waiting for them to make the Windows 8.1 download available again. After all, it's still useful. Just to point out to anyone who might be guided by this topic.


  2. 12 minutes ago, PeterBelow said:

    Interbase  is a SQL database. The book you are using seems to be very old, probably written for an ancient Delphi version like Delphi 7, which used the Borland Database Engine (BDE) for database access and the Database Desktop app for managing the database. This is about 20 years out of date; the BDE has not been offficially supported for more than a decade and it and its tools are difficult to install and get to work on Windows 10 or 11.

    If you want to learn to program in Delphi get the free Delphi Community edition. It comes with a modern version of Interbase and allows you to build application using a local database. The IDE has an integrated database view that can be used for simple database management, but the Interbase installation has its own toolset, like ISQL, which you can use to execute DDL (Database Definition Language) scripts to manage the database.

    I'm using Delphi 7, right. On a virtual machine with Windows 8.1. It's still accessible with this system. I still don't understand why this error is being given. In the most modern versions of Delphi there is no Database Desktop or anything that replaces it. Or is there? If there is, please tell me?


  3. 9 minutes ago, Virgo said:

    Why it happens: probably nobody knows, because nobody probably uses Database Desktop for SQL databases... Maybe someone in Borland would have known, but that company no longer exists.

    And how to solve it: do not use Database Desktop for SQL Databases... It is only useful for working with Paradox databases and maybe DBase/FoxPro databases...

    I'm using Interbase. I don't understand why you're warning me. I'm following the book that I'm using. But anything you can tell me will be useful for my learning. Once again, it's not SQL, it's Interbase. But I'll pay attention to what you're telling me. If you can help me any further, I'll be grateful.


  4. As shown in the image above, when defining the table fields, the Numeric type is displayed with a size of 8 in the integer field and 2 in the decimal field. And after I save it and open it to insert data, it shows the Long type for the Value field, as shown, returning an error if I enter a decimal value. Why does this happen and how can I solve it? Can you help me?

    Respectfully,

    Miguel Archanjo Ferreira Duarte Júnior.

    Captura de tela 2024-09-16 083424.png

    Captura de tela 2024-09-16 083630.png


  5. 12 minutes ago, Stano said:

    I've been using BDE to work with Paradox. I don't know if it's Database Destkop. There is a version for D11. I don't know if there is one for D12.

    I have a Delphi 7 book and it teaches you how to use the Database Desktop. But I don't know which one is compatible to work in Delphi 7 similar to the Database Desktop. If you can tell me I'll be grateful.


  6. You need to run the database desktop application in the menu tools of Delphi 7 but these two messages appear: "private directory is invalid or undefined. using temporary directory instead." e "working directory is invalid or undefined. use startup directory instead." Is anyone able to help me please? To continue programming the application.

    I won't wait, Respectfully, Miguel A. F. D. Jr.

    Captura de tela 2024-09-02 134813.png

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  7. Preciso executar o aplicativo database desktop  no menu tools do delphi 7 mas surge estas duas mensagens "private directory is invalid or undefined. using temporary directory instead." e "working directory is invalid or undefined. use startup directory instead." Se alguém puder me ajudar ficarei grato ? Para que continue a programar minha aplicação. 

    No aguardo, 

    Respeitosamente,

    Miguel A. F. D. Jr. 

    Captura de tela 2024-09-02 134813.png

    Captura de tela 2024-09-02 134828.png

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