Updating Data

Updating data in a database requires that you build a Web front-end that:

• Provides the user with a way to choose which record to update.

Do this by building a list of hyperlink choices.

You should already know how to use the anchor tag.

• Passes the user's selection value to a form page at the end of a URL.

Do this by defining a URL variable in each anchor tag on the listing page.

You'll learn how to do this here.

• Uses that URL variable to retrieve existing database information that's associated with a specific database record.

Do this by generating dynamic SQL.

You learned how to do this in Chapter 5.

• Prefills form fields with the record data and displays it back to the user.

You learned how to do this in Chapter 7.

• Allows the user to update record information on the form.

Like any form, your users should be able to input data.

• Passes the updated record information to the database.

Do this using an UPDATE statement in a query.

You'll learn how to do this here.

• Confirms that changes are made.

Do this by redirecting the user to a page where they can confirm the changes.

You learned how to do this in Chapter 8.

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