Chapter 3 Working with an XML model
Simple type union check
During a simple type union check, the following object control is made.
Undefined base type
You must define at least two data types when you derive a simple type by union.
Manual correction  | Automatic correction  | 
In the simple type property sheet, click  | —  | 
the Properties tool beside the Derivation  | 
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box to display the simple type union  | 
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property sheet and type a white space  | 
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separated list of at least two data types  | 
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(qualified names) in the Member types  | 
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box  | 
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Annotation check
During an annotation check, the following object control is made.
Existence of items
An annotation must contain at least one URI for a Documentation or an
Application Information.
Manual correction  | Automatic correction  | 
Define a URI for a Documentation or an  | —  | 
Application Information  | 
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XSM User's Guide  | 165 |