Question: Draw the ERD for a 1:1 self-referential relationship for made-up entity XYZ. Include PKs and FKs and proper crowsfeet symbols. Make up names for the

Draw the ERD for a 1:1 self-referential relationship for made-up entity XYZ. Include PKs and FKs and proper crowsfeet symbols. Make up names for the PK and FK(s), and add at least one more made-up attribute.

Make a reasonable assumption about the mandatory/optional participation and indicate it in your ERD.

Explain the relationship (including the mandatory/optional participation).

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