Hi Jayakumar Vinayagam,
According to your description and related link, it seems that you use OS-X system developing. we know EF can be used on all platforms (Windows, OSX, Linux, etc.) that support .NET Core.
The following link provide a .NET Core Application to New SQLite Database, which is same as PostgreSQL.
https://docs.efproject.net/en/latest/platforms/netcore/index.html
If you use PostgreSQL, we need to install related provider which allows Entity Framework Core to be used with PostgreSQL, and we need to Install the
Npgsql.EntityFrameworkCore.PostgreSQL NuGet package.
For more information, please refer to:
https://docs.efproject.net/en/latest/providers/npgsql/index.html
If the issue still exists, could you please provide a bit more information, such as related code and related detailed error message.
Best regards,
Cole Wu
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