title: SQL, Link to Element Feature
body: <p>I have two classes. One Attribut of class1 is connected to another attribut of class2.  This was done with the help of the context menue of the connector in the proximity of one class, it is called <strong>Link to element feature</strong>. The same is done on the other side of the connector to select the other attribut of the other class.  So the connector directly connects two attributes and not the classes itselves.  I haven´t found the tables, where this infomation is stored, so I dont find the appropiate SQL to find connected (or not connected) attributes.</p>