The dialog appears when you click the Incremental Fetch button in the Bind Data screen of chart in the Web Report Wizard, or click the button in the Insert Chart dialog or Chart Wizard. It helps you to specify a unique key for the real time chart. See the dialog.
The following are details about options in the dialog:
Resources
Lists all the available data resources in the dataset used by the real time chart.
Adds the selected fields to the Unique Key box.
Removes the selected from the Unique Key box if they are not required.
Unique Key
Lists the fields you have added as the unique key, which is used to guarantee there are no two records with the same unique key value in the real time chart.
When a real time chart is specified with a unique key, each time when the chart automatically updates itself, the data that has the same unique key value as the previous loaded data records will be filtered and only data with different unique key value will be added to the chart. For instance, if you add the fields Country and Product ID as the unique key of a real time chart, when a record with the product ID 1 in USA has already been loaded into the chart, no more records of this product ID in USA will be added to the real time chart because they have the same unique key value.
OK
Applies the settings and closes this dialog.
Cancel
Cancels the settings and closes this dialog.
Help
Displays this help document.
