Schema Element for SubscriptionClass (ADF)

Contains elements that define subscription class fields.

语法

<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	SubscriptionClass Element (ADF)
Child elements	Field Element for SubscriptionClass/Schema (ADF)

备注

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.

示例

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>

请参阅

参考

Application Definition File Reference

其他资源

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帮助和信息

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