문제

I'm looking for free tool for generating ER diagram. I now there are a lot of stuff I can find them in google, but I need something specific and can't it find.

The tool should generate ER diagrams showing relations between attributes like in below image. Note that this diagram shows phisical relation table1.attributeX <----> table2.attributeY

Note: I am not asking for tools that generate diagrams like these. This diagrams doesn't explicit show relations between attrobutes.


(source: philblock.info)

도움이 되었습니까?

해결책

SchemaCrawler is a free tool that generates diagrams showing relations between attributes. That is, there is a relationship line drawn from the primary key column to the foreign key column. Here is an example diagram: SchemaCrawler Diagram

Sualeh Fatehi, SchemaCrawler

다른 팁

As far as I know that's the style MS Access uses in their relationships dialog/overview. It is not the standard so I don't think there a lot of tools will support that kind of notation. I suggest to take a look at ms access. The alternative? I know that in DeZign for Databases you can drag the relationship line on a side of the entity box. This way you can manually point it to the correct attribute. Not sure if you want that.

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