Welcome!

Artificial Intelligence Authors: Elizabeth White, Yeshim Deniz, Liz McMillan, XebiaLabs Blog, Jyoti Bansal

Related Topics: Artificial Intelligence, Microservices Expo

Artificial Intelligence: Article

BEA, IBM, Oracle, SAP, IONA, Siebel and Sybase Announce "Service Component Architecture" Specification

SCA Spec – "A Deployment Descriptor On Steroids" – Has Been Specifically Designed for SOA

BEA, IBM, Oracle, SAP, IONA, Siebel, and Sybase today announced their support for a new specification for building and packaging applications called Service Component Architecture or SCA – a specification that allows developers to focus on writing business logic.

More directly, SCA is "a deployment descriptor on steroids," that works with any language, not just Java. Moreover, you can use procedural languages and declarative language like BPEL and XSLT as well. The key difference is that it uses the notion of declarative policies for things like security, transactions and reliable messaging.

 

One thing that sets SCA apart is that it has been designed for SOA, unlike other systems, such as J2EE which has been adapted to it. It focuses on being able to describe assemblies of components which have been written in a variety programming models and protocols.

The goal of SCA is to make building applications easier. It allows the development off application assemblies without regard to specific middleware APIs or language.

At the heart of SCA is the notion of a service, and its related implementation. A service is defined by an interface which includes a set of operations. Service implementation can reference other services, called references. These services may have one or more properties which are data values that can be configured externally.

A key actor in the SCA universe is is the Service Data Object (SDO). SDOs are used to represent business data, parameters and return values of service invocations, and are a way to represent data as it travels across a service network. Note that XMLBeans and other technologies can be used as well.

SCA components are composed into assemblies. Assemblies are service level applications which are collections of services connected together and appropriately configured. An SCA assembly operates at two levels: First, assemblies are a set of loosely connected components connected within a system. Second, assemblies are a set of loosely connected components connected within a module. The distinction between the two is (roughly) that a module is a collection of components, and a systems is a collection of modules. Furthermore, a system corresponds to "programming in the large" or megaprogramming, and a model is "programming in the small", akin to building one of today's typical applications.

This wiring of components to the services they depend on is how service networks are "assembled." Assembly has been pioneered in a number of technologies and frameworks such as CORBA, J2EE, ATG Dynamo, and Spring; that is, it is nothing new. We have learned from these technologies that assembly provides important benefits (some of the frameworks mentioned do a better job than others at this) such as easier iterative development and avoiding making business logic dependent on middleware containers.

SCA uses the concept of assembly to solve key problems presented by SOA development including:

  1. Separation of business logic from underlying infrastructure, qualities of service, and transport
  2. Linking programming in the small with programming in the large
  3. Providing a unified way to move to and from architectural design, coding, and operational deployment in a bottom-up or top-down approach.

It should be noted that companies like IBM and BEA have been shipping pieces of SCA, like SDO, for some time.

Why does SCA matter?

SCA matters, because this is the first technology that promises a compositional model that will enable the Service Network and allow the building of the next generation of service-oriented applications.

Each innovation in this field allowed a new layer of abstraction to appear which made new tiers of applications possible. C allowed applications to be built that could not be built in assembler, or whose effort would have been prohibitive. C++ allowed things to be built that could not be built in C. Java allowed things not possible in C++. All of these are progenitors to SCA. It appears that SCA is part of a promising future for building large-scale enterprise composite applications.

 

More Stories By SAP News Desk

SAP News Desk trawls the world's news information sources and brings you timely updates on the world's leading provider of enterprise resource planning (ERP) and its various software product lines used to integrate back-office functions such as distribution, accounting, human resources, and manufacturing.

Comments (5) View Comments

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.


Most Recent Comments
Denis 01/30/06 11:29:52 PM EST

Killer article!!! Congratulations. We do need a higher level of abstraction to make the task of assembling Composite Applications more productive.

Joseph Jonas 12/08/05 10:29:06 AM EST

Faint, useless attempt to gain some attention in the SOA Space. I do not see the point nor the correlation to SOA, I think IBM themselves cannot... Bringing some old concepts into a new light and trying to create confusion around SOA where they have less to say...

Javier Cámara 12/01/05 11:41:13 AM EST

I do not see the point of SCA/SDO at al. All I see is technology from IBM, and not new at all:

- I have read Developerworks articles about "IBM SOA Programming Model" at least from June 2005

- The SDO is yet-another Java data abstraction layer from IBM dating back at least to September 2003. It seems to also have been submitted as JSR 235 by IBM and Bea... on December 2003. And, at any rate, I have never seen its relationships with SOA, or services in general.

- The SCA seems to be something quite tied to Webshpere. Besides, it sounds as having a huge overlap with JBI.

- Bea has something called "CommonJ" in which it talks about these things... dating back to at least March 2005

So for me it seems like old IBM stuff that collides with many other things and whose net effect is to blur the landscape a little more.

Michael O'Connell 12/01/05 03:33:09 AM EST

The new Service Component Architecture (SCA 0.9) and updated Service Data Objects (SDO 2.01) specs (and related docs and tools) are now available at IBM developerWorks. The direct URL: http://www.ibm.com/developerworks/library/specification/ws-scasdosumm/

Michael O'Connell 11/30/05 03:47:24 PM EST

The new Service Component Architecture (SCA 0.9) and updated Service Data Objects (SDO 2.01) specs (and related docs and tools) are now available at IBM developerWorks. The direct URL: http://www.ibm.com/developerworks/library/specification/ws-scasdosumm/

@ThingsExpo Stories
SYS-CON Events announced today that SoftLayer, an IBM Company, has been named “Gold Sponsor” of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2016, at the Javits Center in New York, New York. SoftLayer, an IBM Company, provides cloud infrastructure as a service from a growing number of data centers and network points of presence around the world. SoftLayer’s customers range from Web startups to global enterprises.
SYS-CON Events announced today that CA Technologies has been named “Platinum Sponsor” of SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY, and the 21st International Cloud Expo®, which will take place October 31-November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. CA Technologies helps customers succeed in a future where every business – from apparel to energy – is being rewritten by software. From ...
SYS-CON Events announced today that Technologic Systems Inc., an embedded systems solutions company, will exhibit at SYS-CON's @ThingsExpo, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Technologic Systems is an embedded systems company with headquarters in Fountain Hills, Arizona. They have been in business for 32 years, helping more than 8,000 OEM customers and building over a hundred COTS products that have never been discontinued. Technologic Systems’ pr...
SYS-CON Events announced today that Auditwerx will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Auditwerx specializes in SOC 1, SOC 2, and SOC 3 attestation services throughout the U.S. and Canada. As a division of Carr, Riggs & Ingram (CRI), one of the top 20 largest CPA firms nationally, you can expect the resources, skills, and experience of a much larger firm combined with the accessibility and attent...
SYS-CON Events announced today that HTBase will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. HTBase (Gartner 2016 Cool Vendor) delivers a Composable IT infrastructure solution architected for agility and increased efficiency. It turns compute, storage, and fabric into fluid pools of resources that are easily composed and re-composed to meet each application’s needs. With HTBase, companies can quickly prov...
SYS-CON Events announced today that Loom Systems will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Founded in 2015, Loom Systems delivers an advanced AI solution to predict and prevent problems in the digital business. Loom stands alone in the industry as an AI analysis platform requiring no prior math knowledge from operators, leveraging the existing staff to succeed in the digital era. With offices in S...
Buzzword alert: Microservices and IoT at a DevOps conference? What could possibly go wrong? In this Power Panel at DevOps Summit, moderated by Jason Bloomberg, the leading expert on architecting agility for the enterprise and president of Intellyx, panelists peeled away the buzz and discuss the important architectural principles behind implementing IoT solutions for the enterprise. As remote IoT devices and sensors become increasingly intelligent, they become part of our distributed cloud enviro...
SYS-CON Events announced today that T-Mobile will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. As America's Un-carrier, T-Mobile US, Inc., is redefining the way consumers and businesses buy wireless services through leading product and service innovation. The Company's advanced nationwide 4G LTE network delivers outstanding wireless experiences to 67.4 million customers who are unwilling to compromise on ...
SYS-CON Events announced today that Infranics will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Since 2000, Infranics has developed SysMaster Suite, which is required for the stable and efficient management of ICT infrastructure. The ICT management solution developed and provided by Infranics continues to add intelligence to the ICT infrastructure through the IMC (Infra Management Cycle) based on mathemat...
SYS-CON Events announced today that Interoute, owner-operator of one of Europe's largest networks and a global cloud services platform, has been named “Bronze Sponsor” of SYS-CON's 20th Cloud Expo, which will take place on June 6-8, 2017 at the Javits Center in New York, New York. Interoute is the owner-operator of one of Europe's largest networks and a global cloud services platform which encompasses 12 data centers, 14 virtual data centers and 31 colocation centers, with connections to 195 add...
SYS-CON Events announced today that Cloudistics, an on-premises cloud computing company, has been named “Bronze Sponsor” of SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Cloudistics delivers a complete public cloud experience with composable on-premises infrastructures to medium and large enterprises. Its software-defined technology natively converges network, storage, compute, virtualization, and management into a ...
In his session at @ThingsExpo, Eric Lachapelle, CEO of the Professional Evaluation and Certification Board (PECB), will provide an overview of various initiatives to certifiy the security of connected devices and future trends in ensuring public trust of IoT. Eric Lachapelle is the Chief Executive Officer of the Professional Evaluation and Certification Board (PECB), an international certification body. His role is to help companies and individuals to achieve professional, accredited and worldw...
In his General Session at 16th Cloud Expo, David Shacochis, host of The Hybrid IT Files podcast and Vice President at CenturyLink, investigated three key trends of the “gigabit economy" though the story of a Fortune 500 communications company in transformation. Narrating how multi-modal hybrid IT, service automation, and agile delivery all intersect, he will cover the role of storytelling and empathy in achieving strategic alignment between the enterprise and its information technology.
Microservices are a very exciting architectural approach that many organizations are looking to as a way to accelerate innovation. Microservices promise to allow teams to move away from monolithic "ball of mud" systems, but the reality is that, in the vast majority of organizations, different projects and technologies will continue to be developed at different speeds. How to handle the dependencies between these disparate systems with different iteration cycles? Consider the "canoncial problem" ...
The Internet of Things is clearly many things: data collection and analytics, wearables, Smart Grids and Smart Cities, the Industrial Internet, and more. Cool platforms like Arduino, Raspberry Pi, Intel's Galileo and Edison, and a diverse world of sensors are making the IoT a great toy box for developers in all these areas. In this Power Panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, panelists discussed what things are the most important, which will have the most profound e...
Keeping pace with advancements in software delivery processes and tooling is taxing even for the most proficient organizations. Point tools, platforms, open source and the increasing adoption of private and public cloud services requires strong engineering rigor - all in the face of developer demands to use the tools of choice. As Agile has settled in as a mainstream practice, now DevOps has emerged as the next wave to improve software delivery speed and output. To make DevOps work, organization...
My team embarked on building a data lake for our sales and marketing data to better understand customer journeys. This required building a hybrid data pipeline to connect our cloud CRM with the new Hadoop Data Lake. One challenge is that IT was not in a position to provide support until we proved value and marketing did not have the experience, so we embarked on the journey ourselves within the product marketing team for our line of business within Progress. In his session at @BigDataExpo, Sum...
Web Real-Time Communication APIs have quickly revolutionized what browsers are capable of. In addition to video and audio streams, we can now bi-directionally send arbitrary data over WebRTC's PeerConnection Data Channels. With the advent of Progressive Web Apps and new hardware APIs such as WebBluetooh and WebUSB, we can finally enable users to stitch together the Internet of Things directly from their browsers while communicating privately and securely in a decentralized way.
DevOps is often described as a combination of technology and culture. Without both, DevOps isn't complete. However, applying the culture to outdated technology is a recipe for disaster; as response times grow and connections between teams are delayed by technology, the culture will die. A Nutanix Enterprise Cloud has many benefits that provide the needed base for a true DevOps paradigm.
What sort of WebRTC based applications can we expect to see over the next year and beyond? One way to predict development trends is to see what sorts of applications startups are building. In his session at @ThingsExpo, Arin Sime, founder of WebRTC.ventures, will discuss the current and likely future trends in WebRTC application development based on real requests for custom applications from real customers, as well as other public sources of information,