Comments
yourfanat wrote: I am using another tool for Oracle developers - dbForge Studio for Oracle. This IDE has lots of usefull features, among them: oracle designer, code competion and formatter, query builder, debugger, profiler, erxport/import, reports and many others. The latest version supports Oracle 12C. More information here.
Cloud Expo on Google News
SYS-CON.TV
Cloud Expo & Virtualization 2009 East
PLATINUM SPONSORS:
IBM
Smarter Business Solutions Through Dynamic Infrastructure
IBM
Smarter Insights: How the CIO Becomes a Hero Again
Microsoft
Windows Azure
GOLD SPONSORS:
Appsense
Why VDI?
CA
Maximizing the Business Value of Virtualization in Enterprise and Cloud Computing Environments
ExactTarget
Messaging in the Cloud - Email, SMS and Voice
Freedom OSS
Stairway to the Cloud
Sun
Sun's Incubation Platform: Helping Startups Serve the Enterprise
POWER PANELS:
Cloud Computing & Enterprise IT: Cost & Operational Benefits
How and Why is a Flexible IT Infrastructure the Key To the Future?
Click For 2008 West
Event Webcasts
Juggling Multiple Data Models with Services
Guidelines for Success

Recently, a client approached me with a quandary.  When designing XML schemas for Web services, how do you balance the desire to use industry standards such as UBL ( Universal Business Language) or CICA ( Context Inspired Component Architecture) to support data interoperability with the unique needs of particular domains and sub-systems within the enterprise?  The client’s service design team is rightfully concerned with the competing interests of internal enterprise standardization, interoperability with external entities, and addressing the unique needs of local domains and process constraints. How can these competing needs be effectively managed when designing the schema for a given service?

The Standard Answer

Naturally, you start by giving the standard answer - “it depends”.  This is an essential and carefully crafted phrase that all consultants are taught to give according to page 17 of How to Win Clients and Influence Budgets. Of course, the standard answer is rarely sufficient, but it is not without merit.  It is certainly true that the decision regarding your data model design depends significantly upon a host of factors:

  • Which use cases are high priority?
  • Which use cases are high impact (to stakeholders and/or to customers)?
  • Which systems and/or processes are mission critical?
  • Are you including industry standard data models in you enterprise out of necessity (i.e. ONLY when you are forced to interact with other entities), or is it part of a broader modernization effort within your organization?
  • Do interoperability challenges or integration challenges currently contribute most significantly to your development and/or maintenance costs?
  • Which interaction scenarios are of higher priority, internal or external service calls?
  • Would aligning more closely to one of the available models lead to a significant reduction in data mapping activities or is the environment simply too fragmented to support this?
  • Is there one particular system or business process that is unique and skewing perceptions regarding our service data models?

While all of these questions (and many more) are important and aid in facilitating a thorough examination of the problem, we rarely have the time to examine each problem from all possible angles.  Consequently, we must look toward guidelines and rules of thumbs.

Guidelines for Managing Multiple Service Schema

1)       Your business processes should only work with a single data model if at all possible.  Business processes are best designed to be data model agnostic and operate off of an internal, process-centric model.  I explained the importance of process-centric data models in a previous post.

2)       Your services should work with as few data models as possible (one model being preferable).  This is just good commonsense.  For each data model that is added to the mix, your development time and long-term maintenance costs increase at a non-linear rate.  The pain will intensify and it will do so rapidly with each new model you add to the mix.

3)       If your services are going to work with multiple models, you should put some sort of taxonomy / categorization scheme in place to distinguish the data models used by services.  For example, services that are outward facing might use a data model accepted more broadly by the industry.  Services used by a particular LOB might use a certain data model, and services used by another LOB might use another.  Another distinction could be infrastructure services vs data services vs application services.  Regardless of the approach, there needs to be some methodology that is objective and governable for when one data model is used vs when another data model is used.

4)       Data model transformation is a necessary evil.  It should be done only when necessary and you should contain the transformation to a designated component.  Transformation activities should be handled by intermediaries (data services, ESB, network appliance, other mediation framework) when possible rather than building it into the internals of a service or process.  This keeps your services clean, provides a nice reusable transformation mechanism, keeps your interoperability more loosely-coupled, and provides for agility and extensibility in the future.

Juggling multiple data models within a service oriented environment is no one’s idea of fun.  When possible, aim for a more comprehensive and strategic analysis of the environment (see the ‘Standard Answer’ outlined above).  When this is not realistic,  try to use the above guidelines and rules of thumb to help you tactically navigate the murky waters of data model incongruity.  Service design isn’t easy, but it doesn’t have to be rocket surgery either.  Best of luck!

Read the original blog entry...

About Kyle Gabhart
Kyle Gabhart is a subject matter expert specializing in strategic planning and tactical delivery of enterprise technology solutions, blending EA, BPM, SOA, Cloud Computing, and other emerging technologies. Kyle currently serves as a director for Web Age Solutions, a premier provider of technology education and mentoring. Since 2001 he has contributed extensively to the IT community as an author, speaker, consultant, and open source contributor.

Latest Cloud Developer Stories
Whenever a new technology hits the high points of hype, everyone starts talking about it like it will solve all their business problems. Blockchain is one of those technologies. According to Gartner's latest report on the hype cycle of emerging technologies, blockchain has just ...
There's no doubt that blockchain technology is a powerful tool for the enterprise, but bringing it mainstream has not been without challenges. As VP of Technology at 8base, Andrei is working to make developing a blockchain application accessible to anyone. With better tools, entr...
DXWorldEXPO LLC announced today that Nutanix has been named "Platinum Sponsor" of CloudEXPO | DevOpsSUMMIT | DXWorldEXPO New York, which will take place November 12-13, 2018 in New York City. Nutanix makes infrastructure invisible, elevating IT to focus on the applications and se...
Despite being the market leader, we recognized the need to transform and reinvent our business at Dynatrace, before someone else disrupted the market. Over the course of three years, we changed everything - our technology, our culture and our brand image. In this session we'll di...
Founded in 2002 and headquartered in Chicago, Nexum® takes a comprehensive approach to security. Nexum approaches business with one simple statement: “Do what’s right for the customer and success will follow.” Nexum helps you mitigate risks, protect your data, increase busines...
Subscribe to the World's Most Powerful Newsletters
Subscribe to Our Rss Feeds & Get Your SYS-CON News Live!
Click to Add our RSS Feeds to the Service of Your Choice:
Google Reader or Homepage Add to My Yahoo! Subscribe with Bloglines Subscribe in NewsGator Online
myFeedster Add to My AOL Subscribe in Rojo Add 'Hugg' to Newsburst from CNET News.com Kinja Digest View Additional SYS-CON Feeds
Publish Your Article! Please send it to editorial(at)sys-con.com!

Advertise on this site! Contact advertising(at)sys-con.com! 201 802-3021



SYS-CON Featured Whitepapers
Most Read This Week
ADS BY GOOGLE