To learn from the video "retrieve and use the identity id of an inserted record and run multiple database actions", I have tried replicating it, but find I am only adding categories and not products.
Here is my most recent attempt:
www.msoginc.org/surname_project/identityidvideo.html

I have missed some step. Please help.

Hello Hope,
Can you please check if your database is properly setup? I do not see anything returned for the Category ID in your table:

<tr data-binding-repeat="{{addCategory.data}}" data-binding-id="repeat1">
    	<td>{{categoryID}}</td>
    	<td>{{categoryName}}</td>
    	</tr>

The categoryID should be the unique key of your database table. It should be automatically created when you add a new record in the table.

The categoryID is the unique key to the category table and is automatically created. When I go to the mySQL tables on the website, I see the content I have entered under both category and product. It is auto incrementing properly. But now, neither is displaying on the web page result.

Then the issue is the way you show the data on your page. I see that you have a filter ($FORM.categoryID) on the products data source - why is that? You only need two repeat regions with no filters applied ... One for the categories and one for the products.

Thanks, that has me part way there. Still when I click on the button ADD, the result does not display until I refresh the page.

You just need to add a Refresh Datasource behavior on success on the product 2 executor

Refreshing the datasource behavior on the product 2 executor worked for the Product side of the tables but not the Category. I even added a second data binding refresh to Add Category.

Refreshing the datasource behavior on the product 2 executor worked for the Product side of the tables but not the Category. I even added a second data binding refresh to Add Category.

Currently you set:
- Refresh category when category is added
- Refresh products when the second product is added
There is no logical reason to do this.
You need to refresh both of your datasources when the last action is executed.

Thank you. It was very helpful to work through this.