Specifies an XPath expression that specifies the value used to define an identity constraint. See more info at http://www.w3.org/TR/xmlschema11-1/#element-field.
| Property Name | Description | Possible Values |
|---|---|---|
| XPath | Relative XPath expression identifying the field(s) composing the key, key reference, or unique constraint. | An XPath expression. |
| ID | The component id. | Any ID. |
| Component | The edited component name. | Not editable property. |
| System ID | The component system id. | Not editable property. |
