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DOTNET EF COMMANDS UPDATE

Consult the other pages in this section for more in-depth information. The rest of this page is a step-by-step beginner's guide for using migrations. EF Core records all applied migrations in a special history table, allowing it to know which migrations have been applied and which haven't.

Once a new migration has been generated, it can be applied to a database in various ways.

EF Core compares the current model against a snapshot of the old model to determine the differences, and generates migration source files the files can be tracked in your project's source control like any other source file.

When a data model change is introduced, the developer uses EF Core tools to add a corresponding migration describing the updates necessary to keep the database schema in sync.

DOTNET EF COMMANDS UPDATE

The migrations feature in EF Core provides a way to incrementally update the database schema to keep it in sync with the application's data model while preserving existing data in the database.Īt a high level, migrations function in the following way: In real world projects, data models change as features get implemented: new entities or properties are added and removed, and database schemas need to be changed accordingly to be kept in sync with the application.