EventClasses Element (ADF)

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

Sintassi

<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)

Osservazioni

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

Importante:
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.

Esempio

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>

Vedere anche

Riferimento

Application Definition File Reference

Altre risorse

Definizione delle proprietà di una classe di evento principale
Aggiornamento di istanze e applicazioni

Guida in linea e informazioni

Assistenza su SQL Server 2005