Domain-Driven design
study group kick off
Implementing Domain-Driven Design
Vaughn Vernon
DOMAIN-DRIVEN DESIGN
what is all about?
-
isn't first and foremost about technology
- discussion, listening, understanding, discovery and business value
- modelling the application to closely match business requirements
- development team and domain experts involvement to produce a Ubiquitous Language
- isn't first and foremost about technology
- discussion, listening, understanding, discovery and business value
- modelling the application to closely match business requirements
- development team and domain experts involvement to produce a Ubiquitous Language
DOMAIN Experts
who are they?
is not a job title
people who know the line of business we are working in
they can be found among product designers, salespeople, supervisors, etc
DOMAIN EXPERTS
collaboration mode
find them. Listen. Learn. Design in code
put them on the same ground with us (development team)
there should be 0 translations between domain experts, software development and the software
Ubiquitous language
what it is?
is a team language
it is created by everyone on the project team (domain experts, developers, business analysts, etc.)
domain experts will influenced it through industry standards
centered on how the business itself thinks and operates
the software team contributes with own jargon
ubiquitous, but not universal (not enterprise-wide)
benefits
may help domain experts solving different visions of the business model
brings software developers to open discussions where differences in terms and meaning are put in the open
the language helps build the software architecture (strategic and tactical design)
the architecture is transparent to domain experts through technical jargon
by sharing a common knowledge, it reduces "tribal knowledge' of the system
better user experience and less user training
DOMAIN MODEL
what it is?
a software model of the very specific business domain we are working on
a small, well focus on a part of the business
usually implemented as an object model (data and behavior)
bounded context
what it is?
conceptual boundary where a domain model is applicable
provides the context for the Ubiquitous Language
part of strategic design
has it's own Ubiquitous Language
helps adds true business value
business value
when using DDD
the organization gains a reusable model of i'ts domain
a higher level of understanding of business
domain experts contribute to software design
better user experience
architecture is better organized
agile, iterative, continuous modeling is used
new tools, both strategic and tactical, are employed
Domain Driven Design - Study group kick off
By dragoshont
