Web Services Technology

2008 ◽  
pp. 25-44
Author(s):  
Fani A. Tzima ◽  
Pericles A. Mitkas
Keyword(s):  
Distributed Systems ◽  
Web Services ◽  
Service Oriented Architecture ◽  
Design Principles ◽  
The Core ◽  
Business Environments ◽  
Modern Business ◽  
Service Oriented ◽  
High Level ◽  
The Web

This chapter examines the concept of Service-Oriented Architecture (SOA) in conjunction with the Web Services technology as an implementation of the former’s design principles. Following a brief introduction of SOA and its advantages, a high-level overview of the structure and composition of the Web Services platform is provided. This overview covers the core Web services specifications as well as features of the extended architecture stack, which together form a powerful and robust foundation for building distributed systems. The chapter concludes with a discussion of the scope of applicability of SOA and Web services. The overall goal of this chapter is to portray the key assets of the presented technologies and evaluate them as tools for handling adaptability, portability, and interoperability issues that arise in modern business environments.

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.

Towards Process Mediation in Semantic Service Oriented Architecture (SSOA)

2011 ◽  
pp. 780-801 ◽  
Author(s):  
Tariq Mahmoud ◽  
Jorge Marx Gómez
Keyword(s):  
Web Services ◽  
Enterprise Resource Planning ◽  
Service Oriented Architecture ◽  
Resource Planning ◽  
The Public ◽  
Digital World ◽  
Digital Community ◽  
Service Oriented ◽  
Semantic Service ◽  
The Web

Nowadays, it becomes very hard for anybody in the digital world to search and find suitable Web Services fit into his/her needs, since there is a huge amount of data on the Web caused by the enormous increasing of the Web providers and Web Services widespread in this digital community, and one of the most difficulties Web Services have to overcome, in the attempt to use the contents of the World Wide Web, is heterogeneity which is caused by the nature of the Web itself, and has two origins: data or public process heterogeneity. So it is highly required in such environment to have an intelligent mechanism in which every user can search according to his/her needs and later on can fulfill it in a semantic way. The authors will focus in this chapter on the public process heterogeneity which describes the behavior of the participants during a conversation, and propose a solution for dealing with it, explaining the functionality of the process mediator developed as a part of the Web Service Execution Environment (WSMX) and its mediation scenario, and will also apply this proposed solution on Federated Enterprise Resource Planning (FERP) system to get the semantic extension from it.

Building Highly Dependable Wireless Web Services

2010 ◽  
Vol 8 (4) ◽  
pp. 1-16 ◽  
Author(s):  
Wenbing Zhao
Keyword(s):  
Web Services ◽  
Service Oriented Architecture ◽  
State Of The Art ◽  
Mobile Business ◽  
Business Transactions ◽  
High Dependability ◽  
Service Oriented ◽  
And Performance ◽  
Wireless Mobile ◽  
The Web

In this paper, the authors introduce Web services technology and its applications to mobile business transactions. This paper shows that the Web services technology is a powerful tool to build next-generation e-Commerce applications for wireless mobile devices following the service-oriented architecture. Such an approach would bring significant benefits to organizations involved with e-Commerce. The authors further discuss the importance of ensuring high dependability of Web services and provide a literature review of state-of-the-art techniques that are critical to the implementation of practical and dependable wireless Web services. Finally, research on the design, implementation, and performance evaluation of a fault tolerance framework for wireless Web services are described.

Adaptive Service Choreography Support in Virtual Enterprises

2008 ◽  
pp. 66-75 ◽  
Author(s):  
Adomas Svirskas ◽  
Bob Roberts ◽  
Ioannis Ignatiadis
Keyword(s):  
Web Services ◽  
Service Oriented Architecture ◽  
Virtual Enterprises ◽  
Business Applications ◽  
Service Oriented ◽  
Service Choreography ◽  
Business Function ◽  
Business Protocols ◽  
Usage Context ◽  
The Web

Service Oriented Architecture (SOA) approach in general and the Web services technology in particular enable creation of business applications from independently developed, deployed and owned components called services. A service captures a distinct business function offering some value independently of its usage context. However, it is not enough to have the business functionality of the partners packaged as (Web) services; there is also a need for business-aligned order of interaction between these services a.k.a. business protocols, which can also be reused. The contribution of the chapter is two-fold: it explores reusability of the applicable business protocols in different business scenarios and also suggests possible ways to adapt the implementations of the partners’ services (end-points) to the changes in the business protocols.

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 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.

Service Cluster Approach in Enterprise Service Bus

2017 ◽  
pp. 128-141
Author(s):  
Jayashree K ◽  
Chithambaramani Ramalingam
Keyword(s):  
Web Services ◽  
Web Application ◽  
Service Discovery ◽  
Service Oriented Architecture ◽  
Heterogeneous Systems ◽  
Enterprise Service Bus ◽  
Component Integration ◽  
Service Oriented ◽  
Day By Day ◽  
The Web

Enterprise Service Bus is an infrastructure to facilitate Service Oriented Architecture (SOA). SOA has gained a lot of attention over the most recent years and has become the de-facto standard for web application and software component integration. Web services are the prominent model for interoperable applications across heterogeneous systems and electronic business which use SOA and it has been used in various applications. The web services available on the web is increasing day by day, hence web service discovery is becoming a difficult and time consuming task. To discover services, clustering web services is an efficient approach. It is also necessary to compose several web services in order to achieve the user's goal. The chapter presents the background of web services and the various data mining techniques used for clustering web services. The chapter presents the various web services clustering method and the related work that discusses the various techniques to cluster the web services will also be addressed.

A Proposed SOAP Model in WS-Security to Avoid Rewriting Attacks and Ensuring Secure Conversation

2018 ◽  
Vol 12 (1) ◽  
pp. 74-88 ◽  
Author(s):  
Rajni Mohana
Keyword(s):  
Web Services ◽  
Service Oriented Architecture ◽  
Message Processing ◽  
Proposed Model ◽  
Xml Signature ◽  
Service Oriented ◽  
Soap Message ◽  
Shared Key ◽  
A Current ◽  
The Web

Service oriented architecture is a current and popular software engineering paradigm providing agile web services to consumers in a dynamically changing enterprise environment. The SOAP messages are used to establish communication between the web services which are vulnerable to rewriting attacks and insecure conversation. XML Signature as specified in WS-Security provides security to the contents of the SOAP messages but is insufficient. This paper proposes a SOAP model where rewriting attacks can be avoided and a secure conversation can be established as well. This paper recommends three steps, firstly using shared key for encrypting timestamp in the message body for generating corresponding signature; Secondly, using value referencing both for signature validation and message processing; and finally encrypting the whole SOAP body instead of sending an open SOAP Message in the network to prevent unauthorized access. The paper concludes that the proposed model successfully detects rewriting attacks and establishes secure conversation in the to-and-fro message transmission.

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.

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