Service Component Architecture (SCA)
The Service Component Architecture (SCA)  is a collaborative effort driven by a number of software vendors in the Open SOA (OSOA)  Collaboration group to facilitate the building of applications and systems based on service-oriented architecture. The final specification for SCA Version 1.0 was available as of March 21, 2007.
SCA is a set of specifications in the area of service composition, assembly, protocol bindings and policy definitions, where the Service Data Objects (SDO)  specification is used to specify how service data can be specified and manipulated. SDO provides a uniform access pattern for heterogeneous data sources, such as XML or relational databases. Although SCA and SDO can work independently of each other, they are often used together to provide a full end-to-end framework for defining SOA applications and systems.
Conceptually, SOA is an architecture principle to enable software applications to be exposed as services....
- 1.Open SOA Collaboration. http://www.osoa.org/.
- 2.SCA specification, final version 1.0. http://www.osoa.org/display/Main/Service+Component+Architecture+Specifications.
- 3.SDO specification, final version 2.1. http://www.osoa.org/display/Main/Service+Data+Objects+Specifications.
- 4.Spring framework http://static.springframework.org/spring/docs/2.0.x/reference/index.html.