Chapter 4 Working with an XML model
The following XML model checks are made on keys:
| Check | Description and Correction |
|---|---|
| Key name and code uniqueness | Element names and codes must be unique in the model.
Manual correction: Modify the duplicate name/code Automatic correction: Appends a number to the duplicate name/code |
| Existence of fields | A key must contain at least one field.
Manual correction: Add at least one field to the key or delete the key. For example: @numEmployee Automatic correction: Deletes unassigned key For more information on fields, see section Defining an identity constraint field in chapter Building an XML model. |
| Undefined selector | You must define an XPath expression for a key selector attribute.
Manual correction: In the key property sheet, define an XPath expression for the selector attribute. For example: s:company/s:employee Automatic correction: None For more information on XPath expressions, see section Defining an identity constraint selector in chapter Building an XML model. |
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