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Questions tagged [conceptual-model]

Conceptual modeling is the art of visualizing the conceptual model. Conceptual model is a model made of the composition of concepts, that thus exists only in the mind. Conceptual models are used to help us know, understand, or simulate the subject matter they represent.

The term conceptual model may be used to refer to models which are formed after a conceptualization process in the mind.
Conceptual models represent human intentions or semantics. Conceptualization from observation of physical existence and conceptual modeling are the necessary means human employ to think and solve problems.

Concepts are used to convey semantics during various natural languages based communication. Since a concept might map to multiple semantics by itself, an explicit formalization is usually required for identifying and locating the intended semantic from several candidates to avoid misunderstandings and confusions in conceptual models.

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Fan trap and chasm trap - Database

Can anyone tell me what is chasm trap? Perhaps fan trap too as I'm not too clear. Also, please provide easy to understand examples (via Chen notations). My understanding thus far: I understand that Fan trap is M:1:1:M, which suggests the paths…
Dembele
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Using "Include foreign key column in the model" option in EF wizard

Do you mostly use this option (the default is checked) or do you uncheck it? I found out that when I have both FK column and navigation property on my entities it results in problems with mapping tools - they might bind one or the other but almost…
mare
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Difference between domain model, conceptual model and business model etc

I have a question about some terminology that's been confusing me for ages and I just can't seem to figure it out. Wikipedia tends to explain these things very formally which is very hard for me to understand... The terms I've been struggling to…
user1534664
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Create a simple GUI from scratch

On a platform that has no real libraries available, and bare-minimum graphics other than a "display object of dimension(x,y,xx,yy) at coordinates (x,y), I'm trying to create a simple gui. Can someone point me to a reference where I can understand…
alphablender
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What else do I need to use variadic template inheritance to create lambda overloads?

I understand the basic concept of using the recursive nature of variadic template parameters and a specific template instantiation to sort of "eat" my way through the parameter list, one by one. I understand that lambdas can be written to take…
CinchBlue
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ER Modelling Question

I have the following question: Using only binary relationships, construct an entity relationship diagram for the following description. Include entity labels, primary key fields, relationship labels, and the multiplicities on relationships. "A…
user559142
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Conceptual model with a constraint

I'm trying to make a conceptual model of this use case: The Actor can modify the budget but after the modification the sum of all the budget elements percentages must be 100% or 0% if there are no elements in the budget. How can I include this…
Ionut
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Entity Relationship Model for Student / Advisor application

I'm building a web application concerns a student and an adviser. The student will select his independent study and an adviser will supervise it. I am struggling to find the correct relationship for my program. Basically the actors in my application…
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How do you represent different versions of the same entity type (class) in the same UML class diagram?

I’m trying to figure out how to model a situation with following properties: there is a set of entity types Ei...Ej and a set of relationship types between those entity types Ri...Rj in the domain; one can distinguish at least two different…
vrsio
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Constraintless conceptual model of organization with constraints?

We've been given an assignment in which we are to create a conceptual model, described by a text document. There are a number of constraints given in the document, but we have also been instructed not to use constraints in the model. We have been…
FELIX PETTERSSON
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Confusion regarding association relationship in UML

To start off, I'm really confused between the association relationship between classes in UML, as there is unidirectional and bidirectional association. I've drawn up a simple example, which is: But I've looked up some examples online and i found…
Electric
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how to insert text outside a object in DIA?

i'm having a little problem drawing a entity-relationship diagram with the tool DIA. I need to insert text outside objects but the tool let me only write inside them. Is there a way to do it? thanks
Alessandro Cocco
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Conceptual data modelling: How to read a recursive many to many relationship

I understand that a simple binary relationship like the one below would read from left to right: a user "may" have one or more pictures. Also if you read it from right to left is would be... an image "must" belong to one and only one user. However,…
user3832583
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Best way to store date in a CDM (Conceptual Data Model)?

I'm currently retrieving data from a vehicle fleet (fuel used, distance traveled...) through the manufacturer API. For each set of data, there is the date when the metric has been mesured. I will retrieve the data everyday through a rcon call and…
Henry Mont
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How to represent merchandise flavours (or product variants)?

I have the following UML diagram: Where VarietyCategory could take values like size and colour, and Variety for size could be S, M, L, and for colour could be green, red. Now I can have a stock per combination of varieties, taken from the Cartesian…
José González
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