Borland Database Engine (BDE) is a legacy database management system that was officially deprecated starting with Delphi XE7. While it is no longer included in the standard installation of RAD Studio 10.2 Tokyo , a separate installer is provided by Embarcadero

Install Components into the IDE: Installing the engine allows your projects to compile, but to see the components (like TTable or TQuery) in the Tool Palette at design time, you must manually add the design-time package: Open RAD Studio 10.2 Tokyo.

Pro Tip: If you need BDE support for Tokyo, consider migrating your BDE components to FireDAC. FireDAC offers a BDE compatibility mode and is fully supported in 10.2 Tokyo.

If you want, I can:

If you own a licensed copy of RAD Studio 10.2 Tokyo (Community Edition, Professional, Enterprise, or Architect), the BDE Installer is available to you at no additional cost. It is considered part of the "Legacy" feature set.

The BDE Installer for RAD Studio 10.2 Tokyo is a utility that allows you to install and configure the BDE on your development machine. This installer is specifically designed for RAD Studio 10.2 Tokyo and ensures that the BDE is properly installed and configured for use with Delphi and C++Builder.