I've been working with the examples in http://doc.qt.digia.com/4.7/qdeclarativemodels.html which is the Qt page on QML declarative data models. In particular, I'm working with the objectlistmodel e...

I have a datamodel question for a GPS tracking app. When someone uses our app it will save latitude, longitude, current speed, timestamp and burned_calories every 5 seconds. When a workout is compl...

We want to add a table programmatically to our local stored Microsoft SQL Server Compact 3.5 Database. The code below creates the table. using (SqlCeConnection con = new SqlCeConnection("Data So...

I'm looking for some input on the best way to design a data model that revolves around versioned data. There will one-to-many and many-to-many relationships which can all change from version to ver...

This question is in the context of Core Data, but if I am not mistaken, it applies equally well to a more general SQL case. I want to maintain an ordered table using Core Data, with the possibilit...

Problem domain I'm working on a rather big application, which uses a hierarchical data model. It takes images, extracts images' features and creates analysis objects on top of these. So the basic ...

I designed a data model which is represented by an XSD scheme. The data model also provides the types that are being used as web service parameters in a WSDL descriptor. I would like to send the X...

I have an existing internal data model for a Picture, as follows: package test.model; public class Picture { private int height, width; private Format format; public enum Format { JPEG, BMP,...

There seem to be multiple ways to implement data models in Clojure: ordinary built-in datatypes (maps/lists/sets/vectors) built-in datatypes + meta-data -- for example: (type ^{:type ::mytype} {:...

Would it be best practice to create a model in your asp.net mvc - model folder. Use these models with your views and by using a service layer to "adapt" my model to the EF-model. Or have you used ...

Like many these days, I am an old relational-model user approaching Cassandra for the first time. I have been trying to understand Cassandra's data model, and when I read about it I frequently enco...

In xcode 3 there was a helpful feature in the data model builder where you could highlight some attributes/relationships in an entity, right-click, and choose to copy method and property declaratio...

Looking to figure out the proper way to model the below requirements. There are 3 types of “parties” to be concerned with, a Fan, a Band, and a BandMember. That BandMember will always be associa...

As a parallel to my question about Useful stock SQL datasets, I wonder if anyone has come across a library/web page/wiki/etc. that contains stock SQL data models. For example, the problem of mainta...

I'd like to know why one is able to create a new attribute ("new" means "not previously defined in the class body") for an instance of a custom type, but is not able to do the same for a built-in t...

I wonder how Object Oriented data modeling is different from Object Relational data modeling? Is it something like the pluses of both object oriented and relational data modeling were clubbed to ...

After years of coding Delphi programs as untestable code in forms and datamodules, including global variables, and the only classes are the forms themselves, containing all the code I need for the ...

We are in evaluating technologies that we'll use to store data that we gather during the analysis of C/C++ code. In the case of C++, the amount of data can be relatively large, ~20Mb per TU. After...