FieldName Element for EventClass/Schema/Field (ADF)
Specifies the user-defined name of an event field.
Sintassi
<EventClasses>
<EventClass>
...
<Schema>
<Field>
<FieldName>
Element Characteristics
| Characteristic | Description |
|---|---|
Data type |
string, between 1 and 128 characters in length. |
Default value |
None. |
Occurrence |
Required once per Field element. |
Updates |
Can be modified, but not added or deleted, when you update the application. |
Element Relationships
| Relationship | Elements |
|---|---|
Parent element |
|
Child elements |
None. |
Osservazioni
Field names can contain letters, numbers, and the special characters _, #, @, and $. They must conform to SQL Server identifier conventions. For more information about SQL Server identifiers, see Identificatori.
.gif "ms145871.note(it-it,SQL.90).gif") Importante: |
|---|
| You cannot name an event field EventBatchID or EventID. Notification Services already uses these field names internally. |
| Importante: |
|---|
| If you update a FieldName element, updating the application deletes and re-creates the event class to which it corresponds. This includes dropping and re-creating the SQL Server tables and indexes used by this event class. Any data existing in the original event class tables is permanently deleted. |
Esempio
The following example shows how to specify that the field name is StockSymbol.
<FieldName>StockSymbol</FieldName>
Vedere anche
Riferimento
Application Definition File Reference
Altre risorse
Definizione delle proprietà di una classe di evento principale
Aggiornamento di istanze e applicazioni