database design - Can a sublass have two parents (two entity types that are connected with it?) - Database Administrators Stack Exchange

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I'm kind of new to ERDs and stuff, just wondering if I'm correct when my (conceptual) entity relationship diagram has two entity types connected to one subclass (so the subclass inherits data from
database design - Can a sublass have two parents (two entity types that are  connected with it?) - Database Administrators Stack Exchange
Database Design - Subclasses
database design - Can a sublass have two parents (two entity types that are  connected with it?) - Database Administrators Stack Exchange
Architectural Artifacts
database design - Can a sublass have two parents (two entity types that are  connected with it?) - Database Administrators Stack Exchange
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database design - Can a sublass have two parents (two entity types that are  connected with it?) - Database Administrators Stack Exchange
DBMS, PDF, Conceptual Model
database design - Can a sublass have two parents (two entity types that are  connected with it?) - Database Administrators Stack Exchange
Information, Free Full-Text
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Chunks and Rules
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de por adulto (o preço varia de acordo com o tamanho do grupo)