6 Appendix B: Differences Between CSDL 1.0 and CSDL 1.1
CSDL 1.1 is a superset of CSDL 1.0.
This section outlines the differences between CSDL 1.0 and CSDL 1.1.
For CSDL 1.0, the following rules apply.
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ComplexType must not define an Abstract attribute.
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ComplexType must not define a BaseType attribute.
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ReturnType for a FunctionImport must be a collection.
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ReturnType for a FunctionImport must not be a collection of ComplexType.
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Property must not define a CollectionKind attribute.
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Property of type ComplexType must not be Nullable.