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Version: 2025-08

Core Entities

Apart from ET, PT and RT there are some more core entities needed, to get the Meta Model consistent.

Core Relationship Types​

has_rel​

has_rel is the Relationship Type, which allows Entity Types to have Relationship Types. In other words: has_rel relationships connect Entity Types with a Relationship Types.

has_prop​

has_prop is Relationship Type, which allows Entity Types to have Property Types. Analogous has_prop relationships connect an Entity Type with a Relationship Type.

System Properties​