ComplexType (CSDL)
Within the Entity Data Model, the complex type in conceptual schema definition language (CSDL) defines a data type with internal structure but without a key property. The complex type is used to implement a property that has internal properties of its own.
Either an entity or a complex type can declare a property as complex type. This property must be mapped as a complex property in the mapping specification.
The Address property in the following example is implemented as complex type and used as a property of the CCustomer entity.
<EntityType Name="CCustomer">
<Key>
<PropertyRef Name="CustomerId" />
</Key>
<Property Name="CustomerId" Type="Int32" Nullable="false" />
<Property Name="CompanyName" Type="String" />
<Property Name="ContactName" Type="String" />
<Property Name="ContactTitle" Type="String" />
<Property Name="Address" Type="Self.CAddress" Nullable="false" />
</EntityType>
<ComplexType Name="CAddress">
<Property Name="StreetAddress" Type="String" />
<Property Name="City" Type="String" />
<Property Name="Region" Type="String" />
<Property Name="PostalCode" Type="String" />
<Property Name="Country" Type="String" />
<Property Name="Phone" Type="String" />
<Property Name="Fax" Type="String" />
</ComplexType>