EBK SOFTWARE ENGINEERING
10th Edition
ISBN: 9780133943238
Author: SOMMERVILLE
Publisher: PEARSON CO
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Expert Solution & Answer
Chapter 18, Problem 18.1E
Explanation of Solution
Distinctions between Services and software components:
Some of the critical distinctions between services and software components are represented in the below table:
| Services | Software Components |
| Services should be independent and loosely coupled. | Software components should not be independent and loosely coupled. |
| The interface of services is a “provides” interface that allows accesses to the service functionality. However services do not have a “requires” interface as services are intended to be independent and usable in different context. | Software components have two related interfaces- “provides” interface and “requires” interface. |
| Services communicate by exchanging messages, expressed in XML, and these messages are distributed using standard messaging transport protocols such as http and TCP/IP. | Software components can be independently deployed and composed without modification. |
| As there is a single strand of services against several competing standards of components, service inter-operability is much better than components. | As there are several competing standards of components against a single strand of services against, components inter-operability is much poorer than services. |
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