Acct 554 Week 4 Sample Paper

Reusability, loose coupling, discoverability, and autonomy, are four other design principles of SOA. Reusability enhances composability by ensuring that the design is amendable for future utilization. Unfortunately, if users are ignorant of services then they will not be reused. Therefore, the service registry should be publicized and well design that can help clients identify and use the service that fits their needs. Furthermore, reusability is what allows a service to be composed by many others. Thus, it is believed that reusable services can be reused independently by service requestors or integrated within different compositions. Loose coupling provides the groundwork that allows composability and reusability, and can limit a service’s dependence on others. In addition, loose coupling is made possible via the utilization of service contracts. Fortunately, the processing logic from various services are not directed to form tight dependencies; they simply need to be aware of one another’s communication specifications, as defined by the service description documents that compose the service contract. In short, loose coupling establishes a communications structure that …show more content…
Thus, composability is primarily made possible because of the reusability principle. Hence, the ability for a service to compose an activity via the use of a collection of services is achievable when those services being composed are developed for reuse. Service abstraction is accomplished through the service contract because it is the metadata that is represented in the contract that expresses the only information made available to requestors. Thus, any additional implementation details, or designs, are hidden from view behind the contract. SOA principles cannot effectively establish the environment without the utilization of other principles, the principles support and relate to one another by different