Required Attribute in Entity Framework
Data Annotation Required attribute is used for generating NOT NULL columns. Entity framework Code First will create a NOT NULL column if it detects a property having Required attribute.
Data Annotation Required attribute is used for generating NOT NULL columns. Entity framework Code First will create a NOT NULL column if it detects a property having Required attribute.
Apply the NotMapped attribute on those properties, which you do not want to include in your database table. This attribute usually used in the case of calculated fields like Age, Amount, etc. This attribute is available both in Entity Framework & Entity Framework Core
The StringLength Attribute Allows us to specify the size of the column. This attribute is available in the System.ComponentModel.DataAnnotations. The attribute works both in entity framework & Entity Framework core.
The MaxLength Attribute and MinLength Allow us to specify the size of the column. Both these attributes are available in System.ComponentModel.DataAnnotations library. These attributes are similar to StringLength Attribute. Both of these attributes are available in EF 6 & EF Core.
MaxLength/MinLength Attribute in Entity Framework Read More »
Entity framework Code First infers the Foreign Key by using the Navigational property. ForeignKey Attribute can be used to override the default behaviour