Schema Element for SubscriptionClass (ADF)
Contains elements that define subscription class fields.
Синтаксис
<SubscriptionClasses>
<SubscriptionClass>
...
<Schema>
Element Characteristics
| Characteristic | Description |
|---|---|
Data type |
None. |
Default value |
None. |
Occurrence |
Required once per SubscriptionClass element. |
Updates |
Cannot be added or deleted when updating the application. |
Element Relationships
| Relationship | Elements |
|---|---|
Parent element |
|
Child elements |
Замечания
A subscription class schema defines a subscription class table in the application database. Notification Services automatically adds SubscriberID, Created, Updated, and Enabled columns to the subscription class schema.
Пример
The following example shows a Schema element that creates four subscription fields:
- A 255-character subscriber device name field. You typically include this field if your application supports multiple device types.
- A 10-character subscriber locale. You typically include this field if your application supports multiple locales.
- A 10-character stock symbol field.
- A stock trigger price field that accepts monetary data.
<Schema>
<Field>
<FieldName>DeviceName</FieldName>
<FieldType>nvarchar(255)</FieldType>
<FieldTypeMods>NOT NULL</FieldTypeMods>
</Field>
<Field>
<FieldName>SubscriberLocale</FieldName>
<FieldType>nvarchar(10)</FieldType>
<FieldTypeMods>NOT NULL</FieldTypeMods>
</Field>
<Field>
<FieldName>StockSymbol</FieldName>
<FieldType>char(10)</FieldType>
<FieldTypeMods>NOT NULL</FieldTypeMods>
</Field>
<Field>
<FieldName>StockTriggerPrice</FieldName>
<FieldType>money</FieldType>
<FieldTypeMods>NOT NULL DEFAULT 10</FieldTypeMods>
</Field>
</Schema>
См. также
Справочник
Application Definition File Reference
Другие ресурсы
Определение схемы подписок
Обновление экземпляров и приложений