System.ComponentModel.DataAnnotations
The Entity Framework 4.1 through 4.3 included additional data annotations in the System.ComponentModel.DataAnnotations namespace of the EntityFramework assembly. Starting with the Entity Framework 5.0 Beta1, the following annotations were moved to the System.ComponentModel.DataAnnotations.Schema namespace of the System.ComponentModel.DataAnnotations assembly.
System.ComponentModel.DataAnnotations.ColumnAttribute
System.ComponentModel.DataAnnotations.ComplexTypeAttribute
System.ComponentModel.DataAnnotations.DatabaseGeneratedAttribute
System.ComponentModel.DataAnnotations.DatabaseGeneratedOption
System.ComponentModel.DataAnnotations.ForeignKeyAttribute
System.ComponentModel.DataAnnotations.InversePropertyAttribute
System.ComponentModel.DataAnnotations.MaxLengthAttribute
System.ComponentModel.DataAnnotations.MinLengthAttribute
System.ComponentModel.DataAnnotations.NotMappedAttribute
System.ComponentModel.DataAnnotations.TableAttribute