Abstract: Most of existing component specifications arc focused on describing method-oriented interface signatures and behaviors, but their lack of full description of business logic has influenced the efficiency of component reuse directly. On the basis of requirement analysis and elicitation, atomic services and services were defined and the corresponding methods to describe them were given respectively. And then, service-oriented component specifications (SOCS) were de- fined and the detailed domain application samples were given. SOCS is not a substitute for existed component specifica- lions but an extended version of them Finally, this paper talked about its application in the level of CI31〕process.

Key words: Component specification, Atomic service, Service composition, CBD process