Re.Mark

My Life As A Blog

Uniformity and Translation

leave a comment »

In my post yesterday about Agile Architecture, I emphasised the role of standards.  While I think that standards are crucial, I don’t believe that every system, service and application should necessarily implement the standard format for data representation – provided that whatever they do use can be translated to the standard.  It may sound like more effort to have everything implement translators that translate from an internal representation to the standard format – aka the Canonical Data Model.  However, taking this approach leads to greater agility since each individual system, application or service can evolve independently – any changes are local and contained unless they genuinely have a wider scope.  If they do have a wider scope and the standard format needs revising, it is possible (and desirable) that translators will shield other systems from potential impact (do give some thought to versioning before you find yourself needing to revise your enterprise data format – I’d suggest you consider building in support for side by side versioning from day one and have a policy in place for deprecating old versions with adequate notice provided to affected parties.)  What this all means is that you only have to change what needs to change.  Which means that you can respond more quickly and effectively to change.

Advertisements

Written by remark

February 20, 2008 at 1:31 pm

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: