Questions tagged [relationships]
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Does it ever make sense to have a one-to-one obligatory relationship in a relational database?
To illustrate what I mean, imagine a group of students and a group of professors in some kind of a traineeship. Every professor is to mentor one student and every student has to be mentored by one and ...
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if an entity depends on two other entities(that have a relationship between them) should I make the enitity depend on the relationship instead?
If I have three entities (end-user, country, tier) in my system that has relationships as follows:
Where each country has its own tiers with specified points per year, and each end-user has a country ...
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1
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Designing a Distributed System for Indigenous Data Sovereignty Across Nations [closed]
I'm looking for some quick "back-of-the-napkin" thoughts from systems engineers on the following scenario:
A collection of Indigenous groups (in the US, Canada, and Australia) want to design ...
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4
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Many-to-many modeling for microservices
I have two microservices, say "students" and "courses", they represent separate entities that are managed separately by different teams.
A given student can be enrolled in multiple ...
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1
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Match making algorithm respecting players' choices
I am currently developing an application in Python that has a match making functionality to form sports teams of 4 and group them by skill. The following has been implemented and works.
E.g.
Form ...
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1
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115
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UML relationships
Could someone explain to me if the relation in this class diagram is a "dependency" or "association" relationship and why?
I cannot edit the picture. The terms translate into ...
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1
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543
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Architecture for storing generic data
(I am facing this issue with code written in Swift, but would appreciate any high-level pseudocode solution, just so that I may wrap my head around the architecture)
I need to find an architecture ...
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1
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Assigning Relationships between various objects in a collection
Similarly to a sports team chemistry or even a better example would be fifa ultimate team chemistry where putting certain players in the team would improve the team's overall chemistry
Say there are ...
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0
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How to handle relationships between resources in Restful API
Problem
Hi, we have an API that it's pretty similar to a standard CRM. That is, we have a really big amount of resources (even our own customers can define new resources). All of these resources share ...
5
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3
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UML Composition parent association end
The Wikipedia article on the Composite Design Pattern includes the following diagram:
As you see, there is an association relationship which is child 0..* – 1 parent (association).
However, shouldn't ...
1
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2
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determine correct relations in ERD - Customer Orders use case
The below ERD is taken from a professional architecture reference, however I have a concern in the relation between Customer and Invoice, I believe that relation between Customer to Order , and Order ...
2
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3
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285
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OOPS Relationship between Soccer Field and Soccer Player
I am trying to design a simple Soccer game. To keep things simple, I am having a SoccerField to represent the field and a Player class to represent an individual.
A SoccerField will contain a list of ...
0
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1
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119
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Relationship problem between entities
I'm not sure how I should think regarding my database design. I have made this database schema below. And I'm trying to think about the relationship between the entities. I have read through online ...
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user390016
2
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1
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123
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Best notation to store/read/compute complex relationships
I have created an application in which users and tasks can be entered.
A task should be be assigned to one or more users. If more users can do a task, the task should be assigned in such a way that it ...
1
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2
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Relationship between entities in different aggregates and size of aggregate
I read a lot about DDD but few thing are still unclear. At this moment I have two dilemma
The size of aggregates. How small could be an aggregate?
For example we have:
class Car {
String colorId
...