I am at the basic stage of planning out a Relational Database and I am looking for a freeware program that I can use to draw my initial relationship diagrams (with entities and the relationships between them). It would be useful if the same program could later be used to add in entities etc.
I am specifically looking for a program that supports this version of UML
e.g. 1..* --------- 0..*
It needs to be able to include many to many relationships in the initial design phase.