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Results tagged with erd
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user 4012
Entity Relationship Diagram
1
vote
1
answer
2k
views
ERDs: How do you indicate mutually-exclusive encounters?
If you have a character_instance and character entity in an ERD for a video game, and you want to indicate that something happens when a character entity encounters a character_instance entity, how do …
- 209
7
votes
2
answers
1k
views
Design: How do you decide when items are related vs when they are attributes?
I've been trying to figure this out for a while. Let's say you have a person, for example. An attribute of a person is his or her social security number, right? But a person also has a social secur …
- 209
4
votes
1
answer
2k
views
ERD via Chen's notation: How do I organize multiple 'last done' entries?
I'm having an issue creating a little practice ERD. I'm trying to do some more difficult stuff, and I'm not sure what the standard way to organize it is. …
- 209