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Service Reusability Principle
The service reusability principle is a design principle, applied within the service-orientation design paradigm, to create services that can be reused across a business.Thomas Erl, Herbjörn WilhelmseSOA Pattern of the Week (#4): Service NormalizationOnline]. Date accessed: 14 April 2010. These reusable services are designed so that their solution logic is independent of any particular business process or technology. Purpose Service reusability is typically measured by how much extra functionality a service contains that could be reused in future, and how much of the service’s functionality goes beyond the current requirements. This encourages services that contain extra capabilities built around possible future service usage scenarios. However, little is done in designing the service logic in a manner that it could be reused to automate multiple business processes. This results in more focus on equipping services with extra functionality than concentrating on making the core se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Visual Design Elements And Principles
The visual system comprises the sensory organ (the eye) and parts of the central nervous system (the retina containing photoreceptor cells, the optic nerve, the optic tract and the visual cortex) which gives organisms the sense of sight (the ability to detect and process visible light) as well as enabling the formation of several non-image photo response functions. It detects and interprets information from the optical spectrum perceptible to that species to "build a representation" of the surrounding environment. The visual system carries out a number of complex tasks, including the reception of light and the formation of monocular neural representations, colour vision, the neural mechanisms underlying stereopsis and assessment of distances to and between objects, the identification of a particular object of interest, motion perception, the analysis and integration of visual information, pattern recognition, accurate motor coordination under visual guidance, and more. The n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Service-orientation
Service-orientation is a design paradigm for computer software in the form of services. The principles of service-oriented design stress the separation of concerns in the software. Applying service-orientation results in units of software partitioned into discrete, autonomous, and network-accessible units, each designed to solve an individual concern. These units qualify as services. History of service-orientation principles and tenets Service-orientation has received a lot of attention since 2003 due to the benefits it promises. These include increased return on investment, organisational agility and interoperability as well as a better alignment between business and IT. It builds heavily on earlier design paradigms and enhances them with standardisation, loose coupling and business involvement. The paradigm lost momentum in 2009; since 2014, renewed interest can be observed under the Microservices moniker. In technology, different vendor SOA platforms have used different defi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Design Paradigm
A design is a plan or specification for the construction of an object or system or for the implementation of an activity or process or the result of that plan or specification in the form of a prototype, product, or process. The verb ''to design'' expresses the process of developing a design. In some cases, the direct construction of an object without an explicit prior plan (such as in craftwork, some engineering, coding, and graphic design) may also be considered to be a design activity. The design usually has to satisfy certain goals and constraints; may take into account aesthetic, functional, economic, or socio-political considerations; and is expected to interact with a certain environment. Typical examples of designs include architectural and engineering drawings, circuit diagrams, sewing patterns and less tangible artefacts such as business process models. Designing People who produce designs are called ''designers''. The term 'designer' generally refers to someone who wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Erl
Thomas Erl (born 1967) is a Canadian author, and public speaker known for major contributions to the field of service-oriented architecture. Author of eight books on Service Orientation, Erl defined eight widely accepted principles of service orientation. Biography Erl is an SOA author, series editor of the Prentice Hall ''Service-Oriented Computing Series from Thomas Erl'' and editor of the Service Technology Magazine. Erl's primary work has been in laying down the core principles of Service Oriented Computing and service orientation. He also initiated and contributed in creating the catalog of SOA design patterns for building service-oriented systems. As an entrepreneur, Erl founded SOA School in 2004, Cloud School in 2010, and Arcitura Education Inc. in 2011 as an umbrella corporation for his schools. SOA School established the SOA Certified Professional (SOACP) accreditation program and Cloud School established the Cloud Certified Professional accreditation program. Erl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Business Process
A business process, business method or business function is a collection of related, structured activities or tasks by people or equipment in which a specific sequence produces a service or product (serves a particular business goal) for a particular customer or customers. Business processes occur at all organizational levels and may or may not be visible to the customers. A business process may often be visualized (modeled) as a flowchart of a sequence of activities with interleaving decision points or as a process matrix of a sequence of activities with relevance rules based on data in the process. The benefits of using business processes include improved customer satisfaction and improved agility for reacting to rapid market change. Process-oriented organizations break down the barriers of structural departments and try to avoid functional silos. Overview A business process begins with a mission objective (an external event) and ends with achievement of the business object ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gold Plating (analogy)
In time management, gold plating is the phenomenon of working on a project or task past the point of diminishing returns. Phenomenon For example: after having met the requirements, the project manager or the developer works on further enhancing the product, thinking the customer will be delighted to see additional or more polished features, rather than what was asked for or expected. The customer might be disappointed in the results, and the extra effort by the developer might be futile. Gold plating is also considered a bad project management practice for different project management best practices and methodologies such as Project Management Body of Knowledge (PMBOK) and PRINCE2. In this case, 'gold plating' means the addition of any feature not considered in the original scope plan (PMBOK) or product description (PRINCE2) at any point of the project. This is because it introduces a new source of risks to the original planning such as additional testing, documentation, costs, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Service Abstraction
Service abstraction is a design principle that is applied within the service-orientation design paradigm so that the information published in a service contract is limited to what is required to effectively utilize the service The service contract should not contain any superfluous information that is not required for its invocation. Also that the information should be limited to the serviced contract (technical contract and the service level agreement) only, no other document or medium should be made available to the service consumers other than the service contract that contains additional service related information. Purpose A service contract that contains details about what it encapsulates (e.g., the logic, implementation and the technology used to build the service) may end up being used in a particular manner by providing the service consumer more knowledge about the working of the service. In the case of service-orientation, more knowledge is not necessarily better. There is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Service Loose Coupling
Service may refer to: Activities * Administrative service, a required part of the workload of university faculty * Civil service, the body of employees of a government * Community service, volunteer service for the benefit of a community or a punishment that may be imposed by a court * Fan service, a Japanese term referring to something which is specifically designed to entertain fans * Military service, serving in a country's armed forces * Feudal service, see Feudal land tenure in England * Public service, services carried out with the aim of providing a public good * Selfless service, a service which is performed without any expectation of result or award. Arts, entertainment, and media * ''Service'' (album), a 1983 album by Yellow Magic Orchestra * ''Service'' (film), a 2008 film * ''Service'' (play), a 1932 play by British writer Dodie Smith * Service (record label), a Swedish record label * "Service" (''The Walking Dead''), a 2016 television episode of ''The Walking D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Service-oriented Modeling
Service-oriented modeling is the discipline of modeling business and software systems, for the purpose of designing and specifying service-oriented business systems within a variety of architectural styles and paradigms, such as application architecture, service-oriented architecture, microservices, and cloud computing. Any service-oriented modeling method typically includes a modeling language that can be employed by both the "problem domain organization" (the business), and "solution domain organization" (the information technology department), whose unique perspectives typically influence the service development life-cycle strategy and the projects implemented using that strategy. Service-oriented modeling typically strives to create models that provide a comprehensive view of the analysis, design, and architecture of all software entities in an organization, which can be understood by individuals with diverse levels of business and technical understanding. Service-oriented ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Logic Centralization Pattern
Logic Centralization is a design pattern, applied within the service-orientation design paradigm, whose application aims to increase the reusability potential of agnostic logic Logic that does not belong to a specific business process and hence can be reused to automate multiple business processes by ensuring that services do not contain redundant agnostic logic and that any reusable logic should only be represented by a service that has the most suitable functional context.The type of the functionality provided by the service.Kanu TripathService Transaction Handling Without WS-AtomicTransactionOnline].Date accessed: 25 April 2010. Rationale As more and more services are developed, there is a constant risk that services with redundant functionality may be created. Although the application of the Service Normalization Pattern, Service Normalization design pattern does help to eliminate this redundancy, however, just having a set of normalized services on its own, does not guarantee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Service Autonomy Principle
Service autonomy is a design principle that is applied within the service-orientation design paradigm, to provide services with improved independence from their execution environments.Wojciech Cellary,Sergiusz StrykowskE-Government Based on Cloud Computing and Service-Oriented ArchitectureOnline].Date accessed: 17 April 2010. This results in greater reliability, since services can operate with less dependence on resources over which there is little or no control. Purpose The service-orientation design paradigm emphasizes service reuse as dictated by the Service reusability principle, service reusability design principle. Under this paradigm of a heavily reused services, reliability becomes critical to ensure service longevity. In turn, service reliability depends on the service's operational control of service logic and underlying implementation resources to reduce dependence on external resources over which it has little or no control such as shared service logic or a shared databa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Service Statelessness Principle
Service statelessness is a design principle that is applied within the service-orientation design paradigm, in order to design scalable services by separating them from their state data whenever possible.Wojciech Cellary, Sergiusz StrykowskE-Government Based on Cloud Computing and Service-Oriented ArchitectureOnline].Date accessed: 19 April 2010. This results in reduction of the resources consumed by a service as the actual state data management is delegated to an external component or to an architectural extension. By reducing resource consumption, the service can handle more requests in a reliable manner.IBM Red BookPower Systems and SOA SynergyOnline].Date accessed: 21 April 2010. Purpose The interaction of any two Computer program, software programs involves keeping track of the interaction-specific data as each subsequent interaction may depend upon the outcome of the previous interaction. This becomes more important in distributed architectures where the client and the se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
