Four layers that make an architecture easier to talk about: Contextual answers why, Conceptual what, Logical how and Physical with what. Every level spans all four architecture domains.
Read more: TOGAF Standard
In the Ultra Transcenders books
Each book explains Abstraction levels in context, with comparison tables and the common traps.
Terms in this definition
- Logical
Independent of any implementation. Each logical design is made real through a physical counterpart.
- Physical
Describes the concrete, real-world parts that put a logical architecture into effect.
- ALL
A DAX function that ignores any filters and gives back every row of a table or every value of the named columns. Used within CALCULATE, it works as a modifier that clears filters, although REMOVEFILTERS states that intent more clearly where it is available.