Sign up ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I'm working in MS Visio 2010. This is the relevant part of my ERD: ERD

The relationship between Event and Adventure is correct: there's a foreign key from Event to Adventure, and that FK is part of Event's primary key.

However, what I can't figure out is how to make the relationship line from Adventure to AccomodationType be the same, without making that relationship part of the PK of adventure. When I look at the 'Miscellaneous' properties of that relationship line, I want it to be:

  • Cardinality: Zero or more
  • Relationship type: Non-identifying
  • Child has parent: Not optional (mandatory)

But the checkbox for the third property is greyed out, and toggles between True/False as I make the relationship Non-identifying/Identifying.

The only way I could figure out was to disconnect the two columns, from the 'Definition' tab, which then un-grey's the 'Optional' checkbox, but then I lose the foreign key property on the accomType column, and while the relationship symbols are correct, the line remains dotted.

Any ideas, anyone?

share|improve this question

migrated from May 22 '12 at 13:32

This question came from our site for professional and enthusiast programmers.

1 Answer 1

Visio automatically adds foreign key column when creating new relationship. To change mandatory of relationship just set required attribute of this column (In entity properies, tab columns).

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.