Specifying Data Source Fields

When you first create a data source, it is automatically configured to fetch the contents of every field in the source table. Though it might seem a good idea to do this on the off-chance you need all of that data, retrieving more than you need can negatively affect the performance of your application. You can get around this problem by instructing a data source to retrieve only the fields your model needs.

Implementation:

  1. Switch to the Definition tab.
  2. Click to open the Model Data Sources window.
  3. Select the intended data source.
  4. If you have not already checked out the data source, do so by clicking .
  5. Click Fields to open the Data Source Fields window.
  6. Click Refresh Fields to ensure you are looking at the latest field list for the data source.
  7. Un-tick the check box next to any field you do not want the data source to retrieve.

You can tick or un-tick the check box of every field simultaneously using the check box at the very top of the list.

  1. Click Save and close the resulting pop-up.
  2. Click Close.