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Questions tagged [multiplicity]

In mathematics, the multiplicity of a member of a multiset is the number of times it appears in the multiset. For example, the number of times a given polynomial has a root at a given point is the multiplicity of that root.

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How to deal with multiplicity when checking if an arraylist is a subset

I have two Arraylist and I want to check if one is a subset of the other (ordering is not important in the comparison). The problem is: Lets say Ar1={e,e,r} and Ar2={e,r,b,d}. In my code it says Ar1 is a subset. But I want it to say false, cause…
johdoe
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Entity Framework - Change Relationship Multiplicity

I have a table [User] and another table [Salesperson] in my database. [Salesperson] defines a unique UserID which maps to [User].UserID with a foreign key. When I generate the model with Entity Framework I get a 1-to-Many relationship between…
Nathan Taylor
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How does the Entity Framework tell whether a multiplicity of "one" or "zero or one" should be used on a relationship?

I'm programmatically creating an edmx file as part of our code generation process and I'd like to know how the designer decides to use "1" or "0..1" for a relationship when you "Update model from database". Any insight on this? Thanks Edit: Ok, I…
adam0101
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How to read multiplicity in UML

I'm learning about UML, but I am confused about the concept of multiplicity. Consider the Customer class and Order class, in this diagram: First: which class does the number 1 belong to? what about the 0..*? Second: 1 on the line up, 0..* on the…
John Xue
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How to implement `Show` interface for parameterized tuple?

I have Coord function that transforms an n-dimensional size to the type of coordinates bounded by given size: Coord [2,3] = (Fin 2, Fin 3). import Data.Fin import Data.List Size : Type Size = List Nat Coord : Size -> Type Coord [] = () Coord s@(_…
magras
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UML Aggregation Multiplicity

What do the diagram's multiplicity values mean? Do they mean each ShoeStore must have 1 instance of NikeShoes, and that the same instance can be part of many ShoeStore instances? In other words, many ShoeStores might have the same pair of shoes (an…
alohalin
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UML Multiplicity: "0..*" vs "*"

Is there any difference between 0..* and * for representing multiplicity in UML Class Diagrams? I cannot find a comprehensive guide online for multiplicity notations. To me they both seem to be saying the same thing conceptually.
Ymi
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UML association class and OOP languages

I am building a web application with Django, I did the design app with UML2. i read that association class concept does not exist in object oriented programming languages, is that true ?? thank you. class diagram
kamel dev
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Multiplicity in association in class diagram

This may sounds stupid but I am confused with the multiplicity between two classed in UML class diagram. The classes are admin and payment. It is very clear that 1 admin can accept 0..* payment, but I'm not sure about can 0..* payment accepted by 1…
user6268615
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ClassDiagramm 0..1 to 0..1 relation missing steps to convert into java code

I want to write java code by an uml/class-diagram. But I'm not sure about it or how to write it for the relation 0..1 to 0..1 I didn't find any information about this relation. 1 to 0..1 is possible and I know how to create it. Here is my class…
speedyG
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Regarding 1 to 1 associations in UML class models

We often encounter class models, in UML modeling, that state a 1 x 1 or 1 x 1..* or 1..* x 1 or 1..* x 1..* association between given classes. Take the example: Player 1..11 x 1 Team. Wouldn't that impose a practical problem, in which it wouldn't…
Thales Vaz Maciel
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UML multiplicity difference

What is the difference between multiplicity * and 0..*? For example two versions (A and B) of the same relationship: What will be more correct for statement Web-service is used by any number of users?
kyrylomyr
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Two to one multiplicity? - UML Class Diagram

I was creating a class diagram and I realised I wasn't certain about multiplicity. If a class holds two objects of another type of class does that make the multiplicity 2 to 1 or just 1 to 1? Example: Hope the question makes sense. Thanks in…
Patrick
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Why multiplicity.SIMPLE edges cannot be included in vertex-centric indices?

I have an Edgelabel ContainsAttribute which has Multiplicity.SIMPLE These edges also have a property let's call it x that I want to make the vertex-centric index on. PropertyKey propertyX = mgmt.getPropertyKey("x"); EdgeLabel containsAttributeLabel…
Michail Michailidis
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SQL multiplicity many to many insertion process

my question it seems to be pretty simple but unfortunately i couldn't find any satisfactory answer for this. Please take a look on the following example: Table Author define a author, Document has at least one author and table Authors group all…
ePascoal
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