“Presentation” or “Logical/Conceptual View” is seldom added to modelling tools. The example below show a raw table with a lot of attributes, but as we use that we might want to present fake attribute or just a simplification of the raw table adapted to the current diagram. This is still the same physical table, just “presented” for the purpose added readability in a diagram. This will be supported in BSA – we need it otherwise the class sizs will be huge and diagrams useless.