What is Delay signing? During development process, you will need strong name keys to be exposed to developer which is not a good practice from security point of view. In these situations you can assign the key later on and during development, you can use delay signing.
What is difference between Code First and Model first approach ? In the Code-First approach, When you do not have your database exist and you start creating classes for your domain entity and Context class rather than design your database first and then
create the classes which match your database design. In the Model First approach, you create entities, relationship on the visual designer integrated in Visual Studio and then generate entities, context class and database script from your visual model.
What is difference between Code First and Model first approach ? Code First approach : Whether you have an existing database or not, you can code your own classes and properties that correspond to tables and columns and use them with Entity Framework without an .edmx file. In this approach Entity Framework does not leverage any kind of configuration file (.edmx file) to store the database schema, because the mapping API uses these conventions to generate the database schema dynamically at runtime.Code first approach is used to fast development and developer has full controls on entities.Model First approach : We don't have an existing database and the Entity Framework offers a designer that can create a conceptual data model. It also uses an .edmx file to store the model and mapping information. When the model has been created then the Entity Framework designer can generate the database schema that can be used to create the database.
