I have a Model in UML of visual studio and between two entities A y B are a --->>. I mean the Model has A --->> B
What does it mean?
Sorry for not paste a image, the problem is I am new in stack and yet I can"t post images with my reputation.
UML Annotation >>
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Was it like this ?
If so, it means that class A has a data member (a) which is of type B. This is a simple association relationship such that an object of type A refers to an object of type B using a variable 'a'
If the head of the arrow was hollow, it means A is a subtype of B. If the line connecting A and B is dashed, it means class A implements interface B. ...etc.
UML is a pretty exacting graphical format, so the small details may make big differences in meaning.
It might be better if you can get a picture and upload it, then we can help you with the meaning.
That notation does not exist in UML.
It might mean something in another notation, but then of course it would be helpful to know which one.