To make managing a large number of databases easier, you can assign a category to a data source. Categorized data sources appear with the color for the designated category on the bottom left of the data source icon in the bottom of such as
NOTE: For information on adding custom categories, see CUSTOMIZING DATA SOURCE CATEGORIES.
You can categorize a data source when you add a new data source (see Add a New Data Source) or by editing the properties of an existing data source.
1In the Data Source Explorer, locate and then right-click the data source you want to add to a category.
2Choose Properties.
3From the Category list, choose the category you want and then click OK.
When you create a tuning job for the categorized data source you will see that the category color is applied to the top of the tuning job data source details, as follows.