Understanding SELECT and UPDATE

As described previously, you define SQL/XML SELECT statements on the SELECT tab; you define INSERT and UPDATE statements on the UPDATE tab. The DB-to-XML data source simply presents the SQL/XML to the database. The database executes the SQL/XML to the best of its ability, based on the statements you have defined and the permissions of the user associated with the DB-to-XML data source. If the user has read-only permissions, for example, any INSERT or UPDATE statement will fail.

Tip

 

The Output Window can help you troubleshoot database problems. To display the Output Window, click the Output Window button ( )

When Statements are Executed

Statements on the SELECT tab are executed when you click the Execute Query button ( ). Statements on the UPDATE tab, on the other hand, are executed only when an XML version of the DB-to-XML data source document is saved. (The Execute Query button is disabled when the UPDATE tab is active.)

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