er-diagram

Differences between a conceptual UML class diagram and an ERD?

流过昼夜 提交于 2019-11-27 19:08:34
If I create a conceptual class diagram such that each class captures 'name' and 'attributes' but not 'operations', have I not basically created what would be otherwise considered an ERD? I'm trying to gain an understanding of what the differences are between creating a conceptual class diagram as I have described versus calling it a ERD? If these are still two different animals, can somebody please explain what the differences are? There´s little difference in the expressiveness of both (if we just focus on the attributes, classes and associations part) if you use Extended Entity Relationship

Tools to generate a database diagram/ER diagram from existing Oracle database? [closed]

做~自己de王妃 提交于 2019-11-27 05:25:07
问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . Looking for tools (windows platform) to genereate ER diagram (or similar) from an existing Oracle database. Any good tools out there that are free to use or low cost? 回答1: I few years ago, I used Data Architect, part of Power Designer from Sybase. It's a little pricy, but it's excellent. And it makes a fine

Differences between a conceptual UML class diagram and an ERD?

核能气质少年 提交于 2019-11-26 19:46:01
问题 If I create a conceptual class diagram such that each class captures 'name' and 'attributes' but not 'operations', have I not basically created what would be otherwise considered an ERD? I'm trying to gain an understanding of what the differences are between creating a conceptual class diagram as I have described versus calling it a ERD? If these are still two different animals, can somebody please explain what the differences are? 回答1: There´s little difference in the expressiveness of both