All Questions
Tagged with class-design database-design
7 questions
0
votes
1
answer
126
views
Time consideration in multiplicity of classes
In the following image, regarding a CD shop that rents its music CDs.
My question is regarding the correct multiplicity of X. I can think of several possibilities for X:
X= 1..1 as each copy of ...
- 109
1
vote
2
answers
504
views
Deliveryman's position (latitude + longitude) handling on PHP server side from Android app
The context
As a school project, I'm building a PHP and Android app for a fake company. Let's call the company "Express Food", which can talk pretty much by itself.
The "daily meals" are kept by ...
- 21
3
votes
2
answers
2k
views
many to many relation in database schema and oop class diagram
I have Student and Group entities. Student can have many groups and Group can have many students too. so in database I should have middle class and change many-to-many relation to one-to-many and many-...
- 1,365
4
votes
1
answer
1k
views
How to store a potentially large amount of optional properties of objects?
I'm using Entity Framework Code First with ASP.NET MVC. This handles my database design based on the domain models within my application.
As it stands, the engine I'm writing will have a website ...
- 2,169
4
votes
5
answers
3k
views
object model and data model
I have heard/read mixed things on whether to start with an object model or a data model. And more people say to starting with an object model as it will ease your data modelling.
My question is, ...
- 1,383
2
votes
1
answer
116
views
what's the proper way to organize code that straddles multiple objects?
Let's say I have the following classes: person, widget, foo_bars.
A person can have multiple widgets and foo_bars.
When an admin deletes a person, I want my code to do a cascading delete... and ...
- 571
1
vote
4
answers
3k
views
When using Hibernate can we forget about Database Design?
We started (just me and my friend) working on a website. As a part design phase we have finished the drawing a Site Map, decided on the content in each of the web page and the navigation.
As we want ...
- 1,037