6 Appendix B: Differences Between CSDL 1.0 and CSDL 1.1
CSDL 1.1 is a superset of CSDL 1.0.
This section summarizes the differences between CSDL 1.0 and CSDL 1.1.
CSDL 1.0 is restricted in the following ways:
ComplexType cannot define an Abstract attribute.
ComplexType cannot define a BaseType attribute.
ReturnType for a FunctionImport can be a collection.
ReturnType for a FunctionImport cannot be a collection of ComplexType.
Property cannot define a CollectionKind attribute.
Property of type ComplexType cannot be Nullable.