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When the form is submitted, will issue an HTTP PUT request to the above URL sending the customerCreditLimit XML document in the payload. The database connector will map this to the <update> operation of the customerCreditLimit query that we defined above, will use the data in the XML document to resolve the query (replace {creditLimit} and {cnum} in the query with the actual values from the XML document) and perform the UPDATE.
More Info on Updating Existing Records
The database connector is a powerful tool that allows you to perform all CRUD (CREATE, READ, UPDATE, DELETE) operations on your database without the need for programming. Please see this documentation for additional details.