A domain model is composed of the objects, behavior, relationships, and attributes that make up the industry that is the focus of development.

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Definition of a 3-tier system

People often claim that they are following a '3-tier (or n-tier) architecture', and sometimes they then claim to be switching to a Domain Model. But I really never have understood what this mythical '...
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DB modeling for staffing demand and supply

TL;DR - I'm looking for guidance with my database design. I am concerned that my existing design is inefficient and won't be able to handle large numbers of employees. This is going to be long, so ...
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With all of these services, how can I not be anemic?

Where do we draw the line between delegation and encapsulation of business logic? It seems to me that the more we delegate, the more anemic we become. However, delegation also promotes reuse and the ...
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Cascading deletes from an aggregate root through out the entire aggregate doesn't make sense

Based on the same example for this question. Within the Pro ASP.Net MVC 4 by Adam Freeman, there is a discussion on aggregates and aggregate roots with a simple auction system. There are members who ...
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Are Persistence-Ignorant objects able to implement lazy loading?

Persistence Ignorance is an application of single responsibility principle, which in practice means that Domain Objects (DO) shouldn't contain code related to persistence, instead they should only ...
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Does current evidence support the adoption of Contextual over Canonical Data Models?

The "canonical" idea is pervasive in software; patterns like Canonical Model, Canonical Schema, Canonical Data Model and so on, seem to come up again and again in development. Like many developers, I'...
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Ubiquitous language and maturity level in REST API?

According to Richardson Maturity Model there are several levels of maturity in REST approach. http://martinfowler.com/articles/richardsonMaturityModel.html Since DDD uses ubiquitous language, I am ...
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156 views

Domain-specific Interfaces

Are there any real benefits of using interfaces over abstract classes in a domain model? Does anyone have any experience using interfaces in a domain model in a real project? From a technical ...
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How do I model this relationship so that it is valid by construction?

Imagine a device class that represents a physical real world mobile device, with fields like Enabled, Platform, Model IMEI, etc. Then, an operation class, which is something that needs to be done to a ...
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Representing domain objects

This is related to my recent question regarding naming awkward domain objects. A number of answers indicated I was using the wrong representation for the domain objects. To summarize, I chose to use ...
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Domain object model: query by id vs object

Let assume I have two simple model classes: Product and Brand It is obvious I have a query method in Product class like this Product product = Product.findById(123); What if, I want to query ...
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Handling “unspecified” values in software

So I'm working on a software product where we have a number of fields that the customer can leave blank, some of which are numeric. To persist these in the database we use nullable columns. Easy peasy....
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Ubiquitous language and resource based REST API?

I have posted a question regarding Ubiquitous language and maturity level in REST API. Ubiquitous language and maturity level in REST API? After some extensive coding I realized that further ...