EventClasses Element (ADF)

Contains elements that define one or more event classes used by this application.

Syntax

<Application>
    ...
    <EventClasses>

Element Characteristics

Characteristic	Description
Data type	None.
Default value	None.
Occurrence	Optional once per Application element.
Updates	Can be added and deleted when updating the application.

Element Relationships

Relationship	Elements
Parent element	Application Element (ADF)
Child elements	EventClass Element (ADF)

Remarks

An application is not required to have event classes. The Transact-SQL queries that generate notifications can obtain data from other sources.

Important

If you delete the EventClasses group of elements, updating the application deletes the event classes, including all related SQL Server tables and indexes. Any data existing in the original event class tables is permanently deleted.

Example

The following example shows an EventClasses element that has placeholders for two event classes. For an example of an event class, see EventClass Element (ADF).

<EventClasses>
    <EventClass>
    <!-- Define first event class here -->
    </EventClass>
    <EventClass>
    <!-- Define second event class here -->
    </EventClass>
</EventClasses>

See Also

Reference

Application Definition File Reference

Other Resources

Defining Core Event Class Properties
Updating Instances and Applications

Help and Information

Getting SQL Server 2005 Assistance