11.5. Concepts and Observations
A complex type has many options. Accordingly, the XML representation of a complex type has many possible attributes and many choices for content. Because of the capabilities of a complex type, this section highlights quite a few observations about the Schema Recommendation.
11.5.1. Explicitly Non-instantiable Complex Types
Only complex types and element types can be explicitly non-instantiable. A complex type that specifies the abstract attribute with the value ‘false’ cannot have instances. Listing 11.5 is the explicitly non-instantiable dollarPriceType complex type.
Warning
Read the discussion about terminology in Section 1.8 before reading about abstraction and instantiation. The Schema Recommendation uses ...
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