occurrence Element

`occurrence` Element
	Topic Map Fragment XML Schema

`occurrence` Element

This element contains all of the information relating to a single occurrence. The element has the following syntax:

<tm:occurrence oid="OID">
  <tm:sourceLocators>
    <tm:locator href="URI"/>
  </tm:sourceLocators>
  <tm:type displayname="NAME" tref="OID" psi="PSI" />
  <tm:resourcedata> STRING </tm:resourcedata>
  <tm:resource href="URI"/>
  <tm:scope> ... </tm:scope>
</tm:occurrence>

tm:occurrence/@oid: Contains the unique object identifier of the occurrence. This attribute is OPTIONAL. It may be omitted when creating a new occurrence on a topic.
tm:occurrence/tm:sourceLocators: Contains a list of the source locators for this occurrence. This element is OPTIONAL.
tm:occurrence/tm:sourceLocators/tm:locator/@href: Contains a single source locator URI for this occurrence. This attribute is REQUIRED.
tm:occurrence/tm:type/@displayname: Contains a display label for the topic which defines the type of this occurrence. This attribute is OPTIONAL.
tm:occurrence/tm:type/@tref: Contains the unique object identifier of the topic which defines the type of this occurrence. This attribute is REQUIRED.
tm:occurrence/tm:type/@psi: References the topic which defines the type of this occurrence by a subject identifier of that topic. This attribute is OPTIONAL.
tm:occurrence/tm:resourcedata: Contains the resource data value for the occurrence. This element is OPTIONAL.
tm:occurrence/tm:resource: Specifies the resource locator for the occurrence. This element is OPTIONAL.
tm:occurrence/tm:resource/@href: Contains the resource locator URI for this occurrence. This attribute is REQUIRED.
tm:occurrence/tm:scope: Specifies the scope for this occurrence. This element is OPTIONAL.


`variant` Element		`association` Element