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Update README.

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Kevin Matsubara 2025-04-04 17:21:24 +02:00
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@ -25,10 +25,48 @@ adding to an existing solution:
`dotnet sln add Data/Data.csproj` `dotnet sln add Data/Data.csproj`
### Entity Framework commands
Create a migration, inside of the Console project, referring to the Data project:
`dotnet ef migrations add InitialMigration --startup-project ./ --project ../EntityFrameworkCore.Data`
## Links
* [Entity Framework - Database providers](https://learn.microsoft.com/en-us/ef/core/providers/?tabs=dotnet-core-cli)
## Terms ## Terms
A **database-context** is an abstraction of the database structure in code. A **database-context** is an abstraction of the database structure in code.
* It lists the models and their database table names. * It lists the models and their database table names.
* It instantiates a database connection during the runtime of the application. * It instantiates a database connection during the runtime of the application.
* Allows configurations to be made in code. * Allows configurations to be made in code.
The **migrations** provide a version-controlled method to maintain the state of the database.
* It is possible to track when, and by who changes were made.
* In the Up method, it is described which changes should be made.
* in the Down method, it is described which changes should be undone. This allows rollback.
* There is a history table that is kept by default to track migrations.
## Installed NuGet packages
A list of installed NuGet packages in this application.
Note that the [Microsoft.EntityFrameworkCore.Tools](https://www.nuget.org/packages/Microsoft.EntityFrameworkCore.Tools/9.0.3) is used for Powershell commands used in the Package Manager Console for Visual Studio and that [Microsoft.EntityFrameworkCore.Design](https://www.nuget.org/packages/Microsoft.EntityFrameworkCore.Design/9.0.3) is used for cross-platform command tools.
### Console project
[Microsoft.EntityFrameworkCore.Tools](https://www.nuget.org/packages/Microsoft.EntityFrameworkCore.Tools/9.0.3)
* `dotnet add package Microsoft.EntityFrameworkCore.Tools --version 9.0.3`
### Data project
[Microsoft.EntityFrameworkCore](https://www.nuget.org/packages/Microsoft.EntityFrameworkCore/9.0.3)
* `dotnet add package Microsoft.EntityFrameworkCore --version 9.0.3`
[Microsoft.EntityFrameworkCore.Sqlite](https://www.nuget.org/packages/Microsoft.EntityFrameworkCore.Sqlite/9.0.3)
* `dotnet add package Microsoft.EntityFrameworkCore.Sqlite --version 9.0.3`