SqlSchema Element for SubscriptionClass/Chronicles/Chronicle (ADF)

Contains the Transact-SQL statements that define a subscription chronicle table.

Syntax

<SubscriptionClasses>
    <SubscriptionClass>
        ...
        <Chronicles>
            <Chronicle>
                ...
                <SqlSchema>

Element Characteristics

Element Relationships

Remarks

A SqlSchema element defines one or more SqlStatement elements.

When using a subscription chronicle you should include one SqlStatement element that drops or renames the chronicle table if it already exists, and one SqlStatement element that creates the chronicle table. If you do not drop or rename an existing chronicle table, you will receive an "object exists" error when you update the application.

If you want to keep your subscription chronicle data when updating your application, you can comment out the CREATE TABLE statement in your application definition file (ADF) after you create the application.

Example

The following example shows how to drop an existing subscription chronicle table named StockSubscriptionChron, and then create the subscription chronicle table. The table contains three columns, SubscriberID, StockSymbol, and StockPrice.

<SqlSchema>
    <SqlStatement>
    IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES 
    WHERE TABLE_NAME = &apos;StockSubscriptionChron&apos;)
    DROP TABLE StockSubscriptionChron;
    </SqlStatement>
    <SqlStatement>
    CREATE TABLE StockSubscriptionChron
    (
    SubscriberId bigint,
    StockSymbol char(10),
    StockPrice money
    PRIMARY KEY (SubscriberId)
    );
    </SqlStatement>
</SqlSchema>

See Also

Reference

Application Definition File Reference

Other Resources

Defining Chronicles for a Subscription Class
Updating Instances and Applications

Help and Information

Getting SQL Server 2005 Assistance