Chronicle Element for EventClass/Chronicles (ADF)

Provides a location for specifying information about one event chronicle table.

Синтаксис

<EventClasses>
    <EventClass>
        ...
        <Chronicles>
            <Chronicle>

Element Characteristics

Characteristic	Description
Data type	None.
Default value	None.
Occurrence	Required once or more within a Chronicles element.
Updates	Can be added and deleted when updating the application.

Element Relationships

Relationship	Elements
Parent element	Chronicles Element for EventClass (ADF)
Child elements	ChronicleName Element for EventClass/Chronicles/Chronicle (ADF) SqlSchema Element for EventClass/Chronicles/Chronicle (ADF)

Замечания

Event chronicles are optional; use the Chronicle element and its child elements only if you need to maintain event information outside of the event tables used by an event class. A common reason to use event chronicles is to store and maintain event data for scheduled subscriptions. For more information, see Определение хроники для класса событий.

Важно!
If you delete a Chronicle element, updating the application deletes and re-creates the event class to which the chronicle corresponds. This includes dropping and re-creating the Microsoft SQL Server tables and indexes used by the event class.

Пример

The following example shows a Chronicle node that deletes any existing table named StockEventChon and then creates the StockEventChron event chronicle table.

<Chronicle>
    <ChronicleName>StockEventChron</ChronicleName>
    <SqlSchema>
        <SqlStatement>
        IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES
            WHERE TABLE_NAME = &apos;StockEventChron&apos;)
        DROP TABLE StockEventChron
        </SqlStatement>
        <SqlStatement>
        CREATE TABLE StockEventChron
        (
        StockSymbol char(10),
        StockHighPrice money
        PRIMARY KEY (StockSymbol)
        )
        </SqlStatement>
    </SqlSchema>
</Chronicle>

См. также

Справочник

Application Definition File Reference

Другие ресурсы

Определение таблиц хроники событий
Определение хроники для класса событий
Обновление экземпляров и приложений

Справка и поддержка

Получение помощи по SQL Server 2005