Service Oriented Architecture SOA has been proposed as a way to model distributed software development that surpasses the traditional Distributed. Object Architecture DOA practices in many areas.
However, no empirical studies have been conducted toverify the claimed benefits. This study is a first attempt at presenting empirical evidence regarding the benefits of SOA. These two technologies were compared on the. Page 1 of These two technologies were compared on the basis of code size LOC and development time. The results show that, as a whole, the subject application was faster to develop using the SOA method.
Introduction The traditional Distributed Object Architecture DOA used in building multi-tier Web based applications can reach its limit when highly distributed heterogeneous systems need to interoperate. Some modern web applications are using a new computing model where services are treated as self-contained modules that can be advertised, discovered, composed, and negotiated on demand. Service Oriented Architecture By: These two technologies were compared on the basis of code size LOC and development time.
The results show that, as a whole, the subject application was faster to develop using the SOA method. Introduction The traditional Distributed Object Architecture DOA used in building multi-tier Web based applications can reach its limit when highly distributed heterogeneous systems need to interoperate.
Some modern web applications are using a new computing model where services are treated as self-contained modules that can be advertised, discovered, composed, and negotiated on demand. Service Oriented Architecture SOA is a model for designing, building, and deploying distributed software applications. It emphasizes loosely coupled design approaches where disparate systems, with different computing platforms, can collaborate without major changes to their existing core architectures.
A service-oriented architecture SOA is a style of software design where services are provided to the other components by application components , through a communication protocol over a network. The basic principles of service-oriented architecture are independent of vendors, products and technologies. A service has four properties according to one of many definitions of SOA: Different services can be used in conjunction to provide the functionality of a large software application ,  a principle it shares with modular programming.
Service-oriented architecture integrates distributed, separately-maintained and deployed software components. It is enabled by technologies and standards that make it easier for components to communicate and cooperate over a network, especially an IP network. In SOA, services use protocols that describe how they pass and parse messages using description metadata.
This metadata describes both the functional characteristics of the service and quality-of-service characteristics. Service-oriented architecture aims to allow users to combine large chunks of functionality to form applications which are built purely from existing services and combining them in an ad hoc manner. A service presents a simple interface to the requester that abstracts away the underlying complexity acting as a black box.
Further users can also access these independent services without any knowledge of their internal implementation. The related buzzword service-orientation promotes loose coupling between services. SOA separates functions into distinct units, or services,  which developers make accessible over a network in order to allow users to combine and reuse them in the production of applications. These services and their corresponding consumers communicate with each other by passing data in a well-defined, shared format, or by coordinating an activity between two or more services.
A manifesto was published for service-oriented architecture in October, This came up with six core values which are listed as follows: SOA can be seen as part of the continuum which ranges from the older concept of distributed computing   and modular programming , through SOA, and on to current practices of mashups , SaaS , and cloud computing which some see as the offspring of SOA. There are no industry standards relating to the exact composition of a service-oriented architecture, although many industry sources have published their own principles.
Some of these     include the following:. The service consumer—provider relationship is governed by a standardized service contract ,  which has a business part, a functional part and a technical part. Service composition patterns have two broad, high-level architectural styles: Lower level enterprise integration patterns that are not bound to a particular architectural style continue to be relevant and eligible in SOA design.
Service-oriented architecture can be implemented with Web services. These services can represent either new applications or just wrappers around existing legacy systems to make them network-enabled.
Implementers commonly build SOAs using web services standards. These standards also referred to as web service specifications also provide greater interoperability and some protection from lock-in to proprietary vendor software. Architectures can operate independently of specific technologies and can therefore be implemented using a wide range of technologies, including:.
Implementations can use one or more of these protocols and, for example, might use a file-system mechanism to communicate data following a defined interface specification between processes conforming to the SOA concept. The key is independent services with defined interfaces that can be called to perform their tasks in a standard way, without a service having foreknowledge of the calling application, and without the application having or needing knowledge of how the service actually performs its tasks.
SOA enables the development of applications that are built by combining loosely coupled and interoperable services. These services inter-operate based on a formal definition or contract, e. The interface definition hides the implementation of the language-specific service. SOA-based systems can therefore function independently of development technologies and platforms such as Java,.
Services written in C running on. NET platforms and services written in Java running on Java EE platforms, for example, can both be consumed by a common composite application or client. Applications running on either platform can also consume services running on the other as web services that facilitate reuse. High-level programming languages such as BPEL and specifications such as WS-CDL and WS-Coordination extend the service concept by providing a method of defining and supporting orchestration of fine-grained services into more coarse-grained business services, which architects can in turn incorporate into workflows and business processes implemented in composite applications or portals.
Service-oriented modeling is an SOA framework that identifies the various disciplines that guide SOA practitioners to conceptualize, analyze, design, and architect their service-oriented assets. The Service-oriented modeling framework SOMF offers a modeling language and a work structure or "map" depicting the various components that contribute to a successful service-oriented modeling approach.
It illustrates the major elements that identify the "what to do" aspects of a service development scheme.
Service oriented architecture is a reliable software architecture that generates many positives for business activities. This software design principle is implemented into many organizations to connect multiple clients with the wide range of business functions. Service oriented architecture is.
View Notes - Term PaperThe Service Oriented Architecture from CIS at Strayer University. TERM PAPER: THE SERVICE ORIENTED ARCHITECTURE Term Paper: The Service Oriented Architecture James R.
CIS Week 10 Term Paper: The Service-Oriented Architecture. The Service-Oriented Architecture (SOA) strategy allows businesses and organizations to offer. TERM PAPER: THE SERVICE ORIENTED ARCHITECTURE 2 “SOA is a confusing term because it describes two very different things. The first two words describe a software development methodology. The third word, architecture, is a picture of all the software assets of a company, much as an architectural drawing is a representation of all the .
Service Oriented Architecture This Research Paper Service Oriented Architecture and other 64,+ term papers, college essay examples and free essays are available now on herexloadj8.cf Autor: review • February 16, • Research Paper • 3, Words (15 Pages) • Views4/4(1). Service Oriented Architecture Introduction: Defining SOA Service oriented architecture is a reliable software architecture that generates many positives for business activities. This software design principle is implemented into many organizations to connect multiple clients with the wide range of business functions.