Benefits of a Canonical Data Model (CDM) in a SOA environment by Emiel Paasschens

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Introduction

The last few years I’ve been working in several SOA related projects, small projects as well as quite large projects. Almost all of these projects use a Canonical Data Model (CDM). In this post I will explain what a CDM is and point out what the benefits are of using it in an integration layer or a Service Oriented (SOA) environment.

What is a Canonical Data Model?

The Canonical Data Model (CDM) is a data model that covers all data from connecting systems and/or partners. This does not mean the CDM is just a merge of all the data models. The way the data is modelled will be different from the connected data models, but still the CDM is able to contain all the data from the connecting data models. This means there is always a one way, unambiguous translation of data from the CDM to the connecting data model and vice versa.
A good metaphor for this in spoken languages is the Esperanto language. Each living, existing spoken language can be translated to the constructed Esperanto language and vice versa.
In a CDM data translation, the translation is not restricted to the way the data is modelled, but will also be a translation of the values of the data itself.

Example Data

Let’s take as an example the country values for the US and The Netherlands in four connecting data models. Three of these models are ‘based’ on the English language and the last one on the Dutch language. The first two data models are of type XML, the third one is CSV and the last one is a JSON type model: Read the complete article here.

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Technorati Tags: SOA Community,Oracle SOA,Oracle BPM,OPN,Jürgen Kress

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About Jürgen Kress
As a middleware expert Jürgen works at Oracle EMEA Alliances and Channels, responsible for Oracle’s EMEA Fusion Middleware partner business. He is the founder of the Oracle SOA & BPM and the WebLogic Partner Communities and the global Oracle Partner Advisory Councils. With more than 5000 members from all over the world the Middleware Partner Community is the most successful and active community at Oracle. Jürgen manages the community with monthly newsletters, webcasts and conferences. He hosts his annual Fusion Middleware Partner Community Forums and the Fusion Middleware Summer Camps, where more than 200 partners get product updates, roadmap insights and hands-on trainings. Supplemented by many web 2.0 tools like twitter, discussion forums, online communities, blogs and wikis. For the SOA & Cloud Symposium by Thomas Erl, Jürgen is a member of the steering board. He is also a frequent speaker at conferences like the SOA & BPM Integration Days, JAX, UKOUG, OUGN, or OOP.

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