Connector is the definition of a connection between two elements. This is also clearly reflected in the relationships between elements and the connector. Two foreign key connections have been set up for this purpose.
Diagram is the table in which the data about the diagrams is recorded.
Table that records the display of connectors in a diagram.
Table in which the elements that appear on a diagram are recorded. So here are all kinds of coordinate properties to register where an element is on a diagram and what the element looks like on that diagram.
Table includes all elements present in the repository. Please note that this determines how an element looks in diagrams and which compartments become visible in the diagrams based on the object_type and stereotype.