scholarly journals Checkpointing Orchestrated Web Services

2014 ◽  
pp. 223-229
Author(s):  
A. Vani Vathsala ◽  
Hrushikesha Mohanty
Keyword(s):  
Web Services ◽  
Web Service ◽  
Execution Time ◽  
Business Processes ◽  
Service Oriented Architecture ◽  
Mean Time Between Failures ◽  
Time Between Failures ◽  
Service Oriented ◽  
Mean Time ◽  
The Web

Web Services are built on service-oriented architecture which is based on the notion of building applications by discovering and orchestrating services available on the web. Complex business processes can be realized by discovering and orchestrating already available services on the web. In order to make these orchestrated web services resilient to faults; we proposed a simple and elegant checkpointing policy called "Call based Global Checkpointing of Orchestrated web services" which specifies that when a web service calls another web service the calling web service has to save its state. But performance of the web services implementing this policy reduces due to checkpointing overhead. In an effort to improvise this policy, we propose in this paper, a checkpointing policy which uses Predicted Execution Time and Mean Time Between Failures of the called web services to make checkpointing decisions. This policy aims at reducing the required number of Call based Checkpoints but at the same time maintains the resilience of web services to faults.

scholarly journals Web Services Composition Using Dynamic Classification and Simulated Annealing

2018 ◽  
Vol 12 (11) ◽  
pp. 395
Author(s):  
Issam AlHadid ◽  
Evon Abu-Taieh
Keyword(s):  
Simulated Annealing ◽  
Web Services ◽  
Service Composition ◽  
Business Processes ◽  
Service Oriented Architecture ◽  
Service Level Agreement ◽  
Synchronous Mode ◽  
Services Composition ◽  
Service Oriented ◽  
The Web

Service Oriented Architecture (SOA) introduced the web services as distributed computing components that can be independently deployed and invoked by other services or software to provide simple or complex tasks. In this paper we propose a novel approach to solve the problem of the business processes execution engine web service selection and services composition in the Service Oriented Architecture (SOA) related to the Synchronous mode.  The paper provides a mechanism to improve the web services selection and service composition, using dynamic web services and service composition classification and Simulated Annealing (SA) to satisfy services' requirements expressed as the Service Level Agreement (SLA). The results show that the proposed approach enhanced the services composition by increasing the availability and decreasing the response time to the service composite.

scholarly journals Intelligent Framework for Web-Service Testing

2015 ◽  
Vol 4 (1) ◽  
pp. 32
Author(s):  
L S RajivKrishna ◽  
Y Prasanth
Keyword(s):  
Web Services ◽  
Web Service ◽  
Multiple Testing ◽  
Service Oriented Architecture ◽  
Automatic Testing ◽  
Enterprise Information ◽  
Service Oriented ◽  
Testing Management ◽  
The Web ◽  
Automation Testing

<p>Web services provides a distributed computing architecture, with an emerging way of service oriented architecture (SQA). Here service oriented architecture is an interface to both computer systems and web services. Which implements an interaction with each other in new and different ways. According to service oriented architecture it virtually provides a platform for web services to communicate with each other. As it was an easy way for communicating with both clients and services. Many organizations and companies are either evaluating themselves into an enterprise information architectures, or they are in the process of getting adopt to the web services technology. As web services are platform independent it is playing a major role in the enterprise environment, and currently web services are widely accepted by many companies and organizations. So commonly web services possess some challenges to the enterprise environment. As a part of it web service must be tested before publish into a service oriented architecture. It involves large number of test cases, test scenarios that takes more time and effort. Testing management is needed so that it should control the time effort and should reduce the complexity of web service in a large software system, also in a real time world. Automation testing faces these challenges and fixes these issues. Automation testing has an ability to handle the complexities which are experiencing by the web services in a current environment. This paper presents the automatic testing strategies of a web service and detect the problems between both manual and automation testing. Finally results shows the proper effective report on improving the visibility of testing process based on the web approach to enhance the critical communication among multiple testing groups.</p>

scholarly journals Penerapan Service Oriented Architecture Menggunakan Web Service Pada Aplikasi Perpustakaan Berbasis Android

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Ari Tunggul Sri Christanto ◽  
Rachel Kurniawati
Keyword(s):  
Information System ◽  
Information Systems ◽  
Web Services ◽  
Web Service ◽  
Business Processes ◽  
Service Oriented Architecture ◽  
Academic Activities ◽  
Library Book ◽  
Service Oriented ◽  
Academic Information

Abstract. Atma Jaya Yogyakarta University Library is one of the supporting units in academic activities. Currently the library has been using information systems to improve services to users and increase the effectiveness of business processes, in terms of dealing with the circulation of books. There are facts that the search of library book collection has not been optimal and there has not been a history facility for borrowing books by the users. Those problems can be solved by the use of Service Oriented Architecture (SOA), which integrates web service on android. The results of this study are android-based applications that implement Service Oriented Architecture (SOA) using web services to integrate the academic information system, library information system and employee information system. So that the exchange of data and information can run more easily and quickly.Keywords: Service Oriented Architecture, Android, Web Service, Book Collection, Library  Abstrak. Perpustakaan Universitas Atma Jaya Yogyakarta adalah salah satu unit pendukung dalam kegiatan akademis. Saat ini perpustakaan telah menggunakan sistem informasi untuk meningkatkan layanan kepada pengguna dan meningkatkan efektifitas proses bisnisnya, termasuk dalam hal menangani masalah sirkulasi buku. Namun terdapat permasalahan yaitu belum optimalnya pencarian koleksi buku perpustakaan dan belum ada fasilitas histori peminjaman buku oleh anggota. Permasalahan tersebut dapat diselesaikan dengan penggunaan Service Oriented Architecture, yaitu mengintegrasikan web service pada android. Hasil dari penelitian ini adalah aplikasi berbasis android yang menerapkan Service Oriented Architecture menggunakan web service untuk mengintegrasikan sistem informasi akademik, sistem informasi perpustakaan dan sistem informasi kepegawaian, sehingga pertukaran data dan informasi dapat semakin mudah dan cepat.Kata Kunci: Service Oriented Architecture, Android, Web Service, Koleksi Buku, Perpustakaan

scholarly journals Web Services Composition Using Dynamic Classification and Simulated Annealing

2018 ◽  
Vol 12 (11) ◽  
pp. 376
Author(s):  
Issam AlHadid ◽  
Evon Abu-Taieh
Keyword(s):  
Simulated Annealing ◽  
Web Services ◽  
Service Composition ◽  
Business Processes ◽  
Service Oriented Architecture ◽  
Service Level Agreement ◽  
Synchronous Mode ◽  
Services Composition ◽  
Service Oriented ◽  
The Web

Service Oriented Architecture (SOA) introduced the web services as distributed computing components that can be independently deployed and invoked by other services or software to provide simple or complex tasks. In this paper we propose a novel approach to solve the problem of the business processes execution engine web service selection and services composition in the Service Oriented Architecture (SOA) related to the Synchronous mode.&nbsp; The paper provides a mechanism to improve the web services selection and service composition, using dynamic web services and service composition classification and Simulated Annealing (SA) to satisfy services&#39; requirements expressed as the Service Level Agreement (SLA). The results show that the proposed approach enhanced the services composition by increasing the availability and decreasing the response time to the service composite.

scholarly journals A semantic web services discovery approach integrating multiple similarity measures and k-means clustering

2021 ◽  
Vol 24 (2) ◽  
pp. 1228
Author(s):  
Mourad Fariss ◽  
Naoufal El Allali ◽  
Hakima Asaidi ◽  
Mohamed Bellouki
Keyword(s):  
Web Services ◽  
Semantic Web ◽  
Web Service ◽  
Service Discovery ◽  
Service Oriented Architecture ◽  
Similarity Measures ◽  
Web Service Discovery ◽  
Service Oriented ◽  
The Web ◽  
Similarity Scores

Web service (WS) discovery is an essential task for implementing complex applications in a service oriented architecture (SOA), such as selecting, composing, and providing services. This task is limited semantically in the incorporation of the customer’s request and the web services. Furthermore, applying suitable similarity methods for the increasing number of WSs is more relevant for efficient web service discovery. To overcome these limitations, we propose a new approach for web service discovery integrating multiple similarity measures and k-means clustering. The approach enables more accurate services appropriate to the customer's request by calculating different similarity scores between the customer's request and the web services. The global semantic similarity is determined by applying k-means clustering using the obtained similarity scores. The experimental results demonstrated that the proposed semantic web service discovery approach outperforms the state-of-the approaches in terms of precision (98%), recall (95%), and F-measure (96%). The proposed approach is efficiently designed to support and facilitate the selection and composition of web services phases in complex applications.

scholarly journals A Survey on Web Service Discovery Approaches

2021 ◽  
pp. 53-60
Author(s):  
Abdelghany Mosa ◽  
◽  
◽  
Ahmed Abdelaziz
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Discovery ◽  
Service Oriented Architecture ◽  
New Approach ◽  
Web Service Discovery ◽  
Loosely Coupled ◽  
Advantages And Disadvantages ◽  
Service Oriented ◽  
The Web

Service Oriented Architecture (SOA) is an approach to build distributed systems that deliver application functionality as services that are language and platform-independent. Web service is one of the fundamental technologies in implementing SOA based applications. Web services are modular, self-describing, self-contained and loosely coupled applications that can be published, located, and invoked across the web. As the number of web services is increased, finding a set of suitable web service candidates with regard to a user’s requirement becomes a challenge. Web service discovery is the process of finding the most suitable service by matching service descriptions against service requests. Various approaches for web service discovery have been proposed. In this paper, we present an overview of different approaches for web service discovery described in the literature and try to classify them into different categories. We also determine the advantages and disadvantages of each category. The goal is to help researchers to propose a new approach or to select the most appropriate existing approach for service discovery.

PROCESS MODEL ONTOLOGY-BASED MATCHMAKING OF SEMANTIC WEB SERVICES

2011 ◽  
Vol 20 (04) ◽  
pp. 357-370 ◽  
Author(s):  
D. PAULRAJ ◽  
S. SWAMYNATHAN ◽  
M. MADHAIYAN
Keyword(s):  
Web Services ◽  
Semantic Web ◽  
Web Service ◽  
Process Model ◽  
Service Discovery ◽  
Service Oriented Architecture ◽  
Semantic Web Services ◽  
Functional Part ◽  
Service Oriented ◽  
Concise Description

One of the key challenges of the Service Oriented Architecture is the discovery of relevant services for a given task. In Semantic Web Services, service discovery is generally achieved by using the service profile ontology of OWL-S. Profile of a service is a derived, concise description and not a functional part of the semantic web service. There is no schema present in the service profile to describe the input, output (IO), and the IOs in the service profile are not always annotated with ontology concepts, whereas the process model has such a schema to describe the IOs which are always annotated with ontology concepts. In this paper, we propose a complementary sophisticated matchmaking approach which uses the concrete process model ontology of OWL-S instead of the concise service profile ontology. Empirical analysis shows that high precision and recall can be achieved by using the process model-based service discovery.

A Theoretical Foundation of Demand Driven Web Services

2015 ◽  
pp. 392-422
Author(s):  
Zhaohao Sun ◽  
John Yearwood
Keyword(s):  
Web Services ◽  
Social Services ◽  
Service Oriented Architecture ◽  
State Of The Art ◽  
The State ◽  
Cloud Services ◽  
Pivotal Role ◽  
The Internet ◽  
Service Oriented ◽  
The Web

Web services are playing a pivotal role in business, management, governance, and society with the dramatic development of the Internet and the Web. However, many fundamental issues are still ignored to some extent. For example, what is the unified perspective to the state-of-the-art of Web services? What is the foundation of Demand-Driven Web Services (DDWS)? This chapter addresses these fundamental issues by examining the state-of-the-art of Web services and proposing a theoretical and technological foundation for demand-driven Web services with applications. This chapter also presents an extended Service-Oriented Architecture (SOA), eSMACS SOA, and examines main players in this architecture. This chapter then classifies DDWS as government DDWS, organizational DDWS, enterprise DDWS, customer DDWS, and citizen DDWS, and looks at the corresponding Web services. Finally, this chapter examines the theoretical, technical foundations for DDWS with applications. The proposed approaches will facilitate research and development of Web services, mobile services, cloud services, and social services.

Semantic Web Services-Based Knowledge Management Framework

2016 ◽  
pp. 429-438
Author(s):  
Vili Podgorelec ◽  
Boštjan Grašič
Keyword(s):  
Knowledge Management ◽  
Web Services ◽  
Semantic Web ◽  
Business Processes ◽  
Service Oriented Architecture ◽  
Semantic Web Services ◽  
Semantic Web Technologies ◽  
Management Framework ◽  
Knowledge Based ◽  
Service Oriented

In this chapter, a Semantic Web services-based knowledge management framework that enables holistic knowledge management in organizations is presented. As the economy is becoming one single global marketplace, where the best offer wins, organizations have to search for competitive advantage within themselves. With the growing awareness that key potentials of an organization lie within its people and their knowledge, efficient knowledge management is becoming one of key focuses in organizational activities. The proposed knowledge management framework is based on Semantic Web technologies and service-oriented architecture, supporting the operational business processes as well as knowledge-based management of services in service-oriented architecture.

A Role of Enterprise Service Bus in Building Web Services

2017 ◽  
pp. 46-58
Author(s):  
Dinesh Sharma ◽  
Devendra Kumar Mishra
Keyword(s):  
Web Services ◽  
Business Processes ◽  
Service Oriented Architecture ◽  
Enterprise Service Bus ◽  
Fast Processing ◽  
Service Oriented ◽  
Open Standards ◽  
Or Organization ◽  
Services Use

Present is the era of fast processing industries or organization gives more emphasis for planning of business processes. This planning may differ from industry to industry. Service oriented architecture provides extensible and simple architecture for industry problem solutions. Web services are a standardized way for developing interoperable applications. Web services use open standards and protocols like http, xml and soap. This chapter provides a role of enterprise service bus in building web services.

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