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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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Comparing numbers with tolerance concept:

Edit1: Changed question to fit the guidlines. I already asked this question but it got taken down for being to vague. Rewrote the question to make it clearer. My goal is to compare around 6000 numbers with each other and find the matching/closest…
Schausi
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How does iterating over an array using a for loop REALLY work?

I am a javascript beginner and I understand how to iterate over an array and how to use it, but I am trying really, really hard to understand WHY it works. For example: let myArray = ["one", "two", "three", "four"]; for(let i = 0; i <…
ughdeeb
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Uml Class Diagram for Metro Railway

I am trying to draw and define the classes in UML for the following problem. An Information System of Metro Railway Design the part of the conceptual scheme of the above system that will allow me to register the stations (by distinguishing…
giorgionasis
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Conceptual to relational mappings

this is a homework question. I already have my own answer, but I am not sure if its correct, need your guys advise. Here is the conceptual diagram: ------------- | Employer | ------------------- | EmployerID, Name| ------------------- | |-…
db_lover
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Designing a relationship with three entities where two entities have no relation

Trying to implement an ER model where I have entities:teacher,student,papers and relationship: publishes,advises. Both teacher and student can publish a paper but only a teacher can advise a paper. Should I duplicate publishes relationship for both…
Menderft
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PowerDesigner (Database design) - add PK to cross-reference table

i would like to know how to add PK to cross - reference table which is created from converting Conceptual Model to Physical Model and associate it with other table as FK. Conceptual Model Physical Model Expected Result Physical Model Job…
xyz
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How to model the price (clean or dirty) of a financial instrument?

I need help modeling the following situation: A financial instrument always has a price. However, some financial instruments (of certain types, rather) also have what's called "clean" price which is an attribute that depends (among other things) on…
beluchin
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VP ontoUML plugin: how-to add <> class to <> relation

Using Visual Pradigm v17, OpenJDK v11.0.10, OntoUML plugin 0.5.3 on MacOS 10.16: I'd like to use the relator class in my model. I cannot find a way to manually connect the relator class to the material relation that it is supposed to specify. I…
Paul Brandt
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How to correctly show M:N relationship in conceptual data model?

I usually find everything I need, but there is first time for everything.. :D I am trying to create a conceptual data model and I dont know how to properly show M:N relationship, which by default should not be included, but still you can assign…
Vojtěch Juxek Řehák
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Conceptual model Entity -relationship and physical model mysql workbench

I am doing a design of a database, I have built my conceptual entity-relationship model and I have arrived at the physical implementation on mysql workbench. However, I find myself having to manage users who interact with the database. For example,…
tecn603
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Concept of comparing numbers with tolerance

I wanted to ask if there is a better way to compare numbers with a tolerance than mine. Edit: It seems I was way to vague with my explanation. added some information into the text. This is concept only until now. I have not programmed any of it…
Schausi
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Where can I learn more about Conceptual Data Model?

Where can I learn more about Conceptual Data Model? I have to create a schema based on the convention in the image below. I don't understand the "bubble" (or relationship) between the two entities. What should be the name of a relationship (verb,…
Martin
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holistic/natural data model - where to find?

How or where do I find a holistic or natural data model? Wikipedia or other/'real' encyclopedias define terms and by doing so relate them to each other (implicitely). In contrast when I create a datamodel for a specific business use case I usually…
Quicker
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SQL Conceptual Modelling - Can a password be a property of an entity?

I'm currently making a conceptual model for a project and one of my entities happens to be a USER. It's key is a userID, and the properties include firstName, lastName, emailAdr, and userName. A user will have a password after the project is…
AlexT
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Double line coming from an Entity

My Data base professor uses this for the Conceptual design: (I had to fix the words cause it wasn't in English, sorry) Due to a few personal reasons I couldn't watch his classes, and the book I'm using won't tell me why Teacher has this double line…
Tax
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