Identifying the data sources that an item originates from
You can identify the data sources that an item on the charting surface originates from. After you connect to those data sources, you can use their features to gain more insight into the items of interest.
Right-click an item on the charting surface, and then select Edit Item
The Edit window opens.
.The Database Identities list displays the name of the data sources that the item originates from, and the database keys that identify the source records.