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Is this schema correct for this ER diagram? X (K1(primary key), A1, A2, A3, A4, A5) ISA 1 K1) ( A1 A2 A3 CAA (AS

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Is this schema correct for this ER diagram?

X (K1(primary key), A1, A2, A3, A4, A5)

ISA 1 K1) ( A1 A2 A3 CAA (AS )

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