Chronicles Element for EventClass (ADF)

Provides a location for defining one or more Transact-SQL statements that determine the table structure for the chronicle tables used by the event class.

Syntaxe

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

Element Characteristics

Element Relationships

Notes

Event chronicles are optional; use the Chronicles element and its child elements only if you need to maintain event information outside of the event tables used by event classes. For more information, see Définition de chroniques pour une classe d'événements.

Important :
If you add or delete the Chronicles 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 in the existing event tables is permanently deleted.

Exemple

The following example shows a Chronicles element (and its child elements) that deletes any existing table named StockEventChron and then creates the StockEventChron event chronicle table. This table consists of the StockSymbol and StockPrice fields.

<Chronicles>
    <Chronicle>
        <ChronicleName>StockEventChron</ChronicleName>
        <SqlSchema>
            <SqlStatement>
            -- Delete any existing table named StockEventChron
            IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES
            WHERE TABLE_NAME = &apos;StockEventChron&apos;)
            DROP TABLE StockEventChron
            </SqlStatement>
            <SqlStatement>
            -- Create the chronicle table
            CREATE TABLE StockEventChron
            (
            StockSymbol char(10),
            StockHighPrice money
            PRIMARY KEY (StockSymbol)
            )
            </SqlStatement>
        </SqlSchema>
    </Chronicle>
</Chronicles>

Voir aussi

Référence

Application Definition File Reference

Autres ressources

Définition de chroniques pour une classe d'événements
Mise à jour des instances et des applications

Aide et Informations

Assistance sur SQL Server 2005