The STAR eXchange

Interoperability when dealing with standards can be a frustrating thing, and it should not be.   The goal of a standard is to reduce the overall work that has to be done, eliminate the one offs, and allow users to exchange their data between tools.   However, the failure of many UML based tools to reliably read and exchange even the simplest of models is a lesson that we should learn from, not try to emulate.

It's been interesting following the Model Interchange Workgroup's testing of various UML 2.1 compliant tools.  The results have not been surprising.  Many tools have interoperability problems, from failing to render according to the spec, to not even being able to read a compliant XMI file.    To many large vendors there is little incentive to have interoperability as they feel it gives them a edge.  However, these vendors are just opening the door to others that can provide interoperability.   Having a unique implementation or a one off of a standard is not an advantage, it's a hindrance to your customers.

It's important for Standards to be Standard.  While it may be convenient for you to make a one off change, as soon as you role that change outside of your internal application, you provide a pain point for all of your trading partners.    In order for Standards to be Standard, members and the community need to participate.  It means contributing your requirements back to the organization, or working with the organization to find where your requirements are captured.  In many cases your use case is not unique as you think.

In order to help enable these changes, standard organizations need to respond quicker to the communities needs.  They need to adapt and make changes available sooner.   STAR currently publishes a yearly version available to the community.  However members can get updated versions in a little as a day after the request is received.   It's one of the benefits of being a member.  However, are we responding quick enough by a yearly release?  Does the community need a bi-annual release?

Organizations should also provide a testing tools for the community.  STAR provides the BOD Validation website which adopters can use to check that their STAR BOD validates against the official STAR schemas.  If you receive something from a trading partner that doesn't validate, it isn't STAR compliant.  The community needs to step up as well and make sure that your trading partners are using validly formatted BODs.  There is only so much enforcement that an organization can do.

The community needs to ask and demand for interoperability.

In general though, having non-interoperable changes may not necessarily affect your implementation, but it does greatly affect your trading partners and their trading partners as well.   Do not repeat the mistakes of the UML Tool vendors.  Let's learn from them.