You can drill down in the Data Source Explorer tree to view registered databases on a server, and view tables, and other objects in a database. Additionally, you can view the structure of individual objects such as the columns and indexes of a table. Right-click the object for a menu of available commands, such as Extract to Project, which creates a new SQL file containing the object's DDL.
In most cases, whenever you browse a data source, SQL Query Tuner requires login information in order to connect with the data source. Enter a valid user name and password in the fields provided. The Auto Connect option retains your login credentials for future connections to the same data source.
You can turn off the Auto Connect feature by right-clicking on a specified data source and toggling the Connect on Expand option. By default, when Connect on Expand is active, SQL Query Tuner automatically attempts to connect to the server each time you browse a data source.