New topic added to online #PowerDesigner Excel Import course – Importing subtype hierarchies in Barker Notation.

I’ve added a new topic to the ‘Special cases’ section of my online training course for the PowerDesigner Excel Import Wizard – “Importing subtype hierarchies in Barker Notation”.

Barker notation is available in the Conceptual and Logical Data Models, and it handles entity hierarchies differently from other notations – a sub-type entity is actually owned by the super-type entity, and they are depicted in diagrams as ‘boxes within boxes’. There are no Inheritance objects involved, so the Excel Import must be fed different information.

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That’s the real beauty of online training courses — new material can be added at any time.