scholarly journals Basic Components of Web Services Architecture: A Survey

2020 ◽  
Vol 4 (4) ◽  
pp. 26-29
Author(s):  
M.Kiran Kumar ◽  
VJST Anirudh
Keyword(s):  
Web Services ◽  
Web Service ◽  
Electronic Device ◽  
Vital Role ◽  
Service Description ◽  
Application Development ◽  
It Industry ◽  
Service Architecture ◽  
Access Protocol ◽  
The Web

Service provided by one electronic device to the other electronic device or devices is generally called as a web service. It may be a block of code that can be remotely accessed and utilized. In the present IT industry web services are playing a vital role in application development by providing a facility of using the existing modules to make up an application without coding from the scratch. This improves the productivity and reduces the overall project development cost and time. This paper provides the basic information of the components that supports the usage of web service along with the web service architecture. The components that are required for the web service architecture such as SOAP: simple object access protocol: used for establishing connection between components, UDDI (Universal Description, Discovery, and Integration):a registry that stores all the web services and WSDL: web service description language.

IT Application Development with Web Services

2011 ◽  
pp. 2278-2284
Author(s):  
Christos Makris ◽  
Yannis Panagis ◽  
Evangelos Sakkopoulos ◽  
Athanasios Tsakalidis
Keyword(s):  
Web Services ◽  
Web Service ◽  
Functional Characterization ◽  
Service Description ◽  
Application Development ◽  
Storage And Retrieval ◽  
Loosely Coupled ◽  
Global Consensus ◽  
Application Logic ◽  
The Web

The advent of Web Services (WS) has signaled a true revolution in the way service-oriented computing and remote procedure invocation over the Web are conducted. Web Services comprise of a set of loosely coupled specifications to coordinate process execution from distance, based on common and widely accepted Web protocols such as HTTP, FTP, and XML, and therefore, providing increased development flexibility. Since the WS Framework was built on top of those protocols, Web Services have been widely acclaimed by the Web development community and paradoxically; they have marked one of the few examples in the history of computer protocols where a global consensus has been reached. The Web Service framework consists of essentially three basic components: 1. The Web Service Description Language (WSDL), a language that allows formal functional characterization of the provided functionalities; 2. The Simple Object Access Protocol (simply SOAP from its version 1.2), a protocol that defines the format of the information interchange; and 3. The UDDI (Universal Description, Discovery and Integration) is a catalog of Web Service descriptions. All three of these components are specified using XML markup. The elegance of the WS architecture lies in the fact that every WS transaction is taking place over established Web protocols such as HTTP and FTP. As remarked in Ballinger (2003, p. 5): “A Web Service is an application logic that is accessible using Internet standards.” This very fact has accounted for the rapid and universal adoption of Web Services. This work is organized as follows: First, a review of underlying technologies and tools is presented. Consequently, existing techniques for design methodologies are described. Next, an overview of storage and retrieval techniques for Web Services is given followed by real-world applications of Web Services. We conclude with open issues and discussion.

Authentication Techniques for UDDI Registries

2011 ◽  
pp. 9-30
Author(s):  
Elisa Bertino ◽  
Barbara Carminati ◽  
Elena Ferrari
Keyword(s):  
Web Services ◽  
Web Service ◽  
Digital Signature ◽  
The Internet ◽  
Software System ◽  
Description Language ◽  
Service Architecture ◽  
Access Protocol ◽  
Security Issues ◽  
The Web

A Web service is a software system designed to support interoperable application-to-application interactions over the Internet. Web services are based on a set of XML standards, such as Web services description language (WSDL), simple object access protocol (SOAP) and universal description, discovery and integration (UDDI). A key role in the Web service architecture is played by UDDI registries, i.e., a structured repository of information that can be queried by clients to find the Web services that better fit their needs. Even if, at the beginning, UDDI has been mainly conceived as a public registry without specific facilities for security, today security issues are becoming more and more crucial, due to the fact that data published in UDDI registries may be highly strategic and sensitive. In this chapter, we focus on authenticity issues, by proposing a method based on Merkle hash trees, which does not require the party managing the UDDI to be trusted wrt authenticity. In the chapter, besides giving all the details of the proposed solution, we show its benefit wrt standard digital signature techniques.

Web Services Architecture Model to Support Distributed Systems

2019 ◽  
Vol 54 (6) ◽  
Author(s):  
Sawsan Ali Hamid ◽  
Rana Alauldeen Abdalrahman ◽  
Inam Abdullah Lafta ◽  
Israa Al Barazanchi
Keyword(s):  
Web Services ◽  
Web Service ◽  
Distributed System ◽  
Modern Technology ◽  
Service Description ◽  
Architecture Model ◽  
Software Applications ◽  
Evolving Model ◽  
The Web

Recently, web services have presented a new and evolving model for constructing the distributed system. The meteoric growth of the Web over the last few years proves the efficacy of using simple protocols over the Internet as the basis for a large number of web services and applications. Web service is a modern technology of web, which can be defined as software applications with a programmatic interface based on Internet protocol. Web services became common in the applications of the web by the help of Universal, Description, Discovery and Integration; Web Service Description Language and Simple Object Access Protocol. The architecture of web services refers to a collection of conceptual components in which common sets of standard can be defined among interoperating components. Nevertheless, the existing Web service's architecture is not impervious to some challenges, such as security problems, and the quality of services. Against this backdrop, the present study will provide an overview of these issues. Therefore, it aims to propose web services architecture model to support distributed system in terms of application and issues.

scholarly journals A Study on Knowledge Discovery of Relevant Web Services with Semantic and Syntactic approaches

2013 ◽  
Vol 4 (1) ◽  
pp. 8-11
Author(s):  
Mrs. M. Akila Rani ◽  
Dr. D. Shanthi
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Discovery ◽  
Web Mining ◽  
Support Service ◽  
Service Description ◽  
Web Service Discovery ◽  
Novel Approach ◽  
High Flexibility ◽  
The Web

Web mining is the application of data mining techniques to discover patterns from the Web. Web services defines set of standards like WSDL(Web Service Description Language), SOAP(Simple Object Access Protocol) and UDDI(Universal Description Discovery and Integration) to support service description, discovery and invocation in a uniform interchangeable format between heterogeneous applications. Due to huge number of Web services and short content of WSDL description, the identification of correct Web services becomes a time consuming process and retrieves a vast amount of irrelevant Web services. This emerges the need for the efficient Web service mining framework for Web service discovery. Discovery involves matching, assessment and selection. Various complex relationships may provide incompatibility in delivering and identifying efficient Web services. As a result the web service requester did not attain the exact useful services. A research has emerged to develop method to improve the accuracy of Web service discovery to match the best services. In the discovery of Web services there are two approaches are available namely Semantic based approach and Syntactic based approach. Semantic based approach gives high accuracy than Syntactic approach but it takes high processing time. Syntactic based approach has high flexibility. Thus, this paper presents a survey of semantic based and syntactic based approaches of Web service discovery system and it proposed a novel approach which has better accuracy and good flexibility than existing one. Finally, it compares the existing approaches in web service discovery.

scholarly journals Usage of Web Service in Mobile Application for Parents and Students in Binus School Serpong

2016 ◽  
Vol 7 (3) ◽  
pp. 181
Author(s):  
Karto Iskandar ◽  
Andrew Thejo Putranto
Keyword(s):  
World Wide Web ◽  
Web Services ◽  
Web Service ◽  
Mobile Application ◽  
World Wide ◽  
Electronic Device ◽  
Web Server ◽  
The World ◽  
Data Problem ◽  
The Web

A web service is a service offered by a device electronically to communicate with other electronic device using the World wide web. Smartphone is an electronic device that almost everyone has, especially student and parent for getting information about the school. In BINUS School Serpong mobile application, web services used for getting data from web server like student and menu data. Problem faced by BINUS School Serpong today is the time-consuming application update when using the native application while the application updates are very frequent. To resolve this problem, BINUS School Serpong mobile application will use the web service. This article showed the usage of web services with XML for retrieving data of student. The result from this study is that by using web service, smartphone can retrieve data consistently between multiple platforms. 

scholarly journals Leverage Label and Word Embedding for Semantic Sparse Web Service Discovery

2020 ◽  
Vol 2020 ◽  
pp. 1-8 ◽  
Author(s):  
Chengai Sun ◽  
Liangyu Lv ◽  
Gang Tian ◽  
Qibo Wang ◽  
Xiaoning Zhang ◽  
...  
Keyword(s):  
Web Services ◽  
Web Service ◽  
Hierarchical Models ◽  
Service Discovery ◽  
Topic Model ◽  
External Information ◽  
Service Description ◽  
Web Service Discovery ◽  
Improved Performance ◽  
The Web

Information retrieval-based Web service discovery approach suffers from the semantic sparsity problem caused by lacking of statistical information when the Web services are described in short texts. To handle this problem, external information is often utilized to improve the discovery performance. Inspired by this, we propose a novel Web service discovery approach based on a neural topic model and leveraging Web service labels. More specifically, words in Web services are mapped into continuous embeddings, and labels are integrated by a neural topic model simultaneously for embodying external semantics of the Web service description. Based on the topic model, the services are interpreted into hierarchical models for building a service querying and ranking model. Extensive experiments on several datasets demonstrated that the proposed approach achieves improved performance in terms of F-measure. The results also suggest that leveraging external information is useful for semantic sparse Web service discovery.

From User's Goal to Semantic Web Services Discovery

2016 ◽  
pp. 1900-1924
Author(s):  
Houda el Bouhissi ◽  
Mimoun Malki ◽  
Mohamed Amine Sidi Ali Cherif
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Discovery ◽  
Research Problem ◽  
Discovery Process ◽  
Service Description ◽  
Service Request ◽  
User Expectations ◽  
Medical Analysis ◽  
The Web

The growing number of the Web Services available on the Web without explicit associated semantic descriptions raises a new and challenging research problem: How to discover efficiently the relevant Web Services that fulfill the user expectations. However, many services that are relevant to a specific user service request may not be considered during the service discovery process. In this paper, the authors address the issue of the Web Service discovery given nonexplicit service description semantics that match a specific service request. Their approach is based on a captured user goal from an HTML form and the traceability and involves semantic-based service categorization, semantic discovery and selection of the best Web Service. Furthermore, the authors' proposal employs ontology matching algorithms to match a specific goal to an existing Web Service. An experimental test of the proposed framework related to the Medical Analysis domain is reported, showing the impact of the proposal in decreasing the time and the effort of the discovery process as a whole.

A Logic Programming Based Framework for Intelligent Web Service Composition

2010 ◽  
pp. 193-221 ◽  
Author(s):  
Enrico Pontelli ◽  
Tran Cao Son ◽  
Chitta Baral
Keyword(s):  
Web Services ◽  
Logic Programming ◽  
Web Service ◽  
Service Composition ◽  
Web Service Composition ◽  
Service Description ◽  
Incomplete Knowledge ◽  
Programming Framework ◽  
Composition Problem ◽  
The Web

This chapter presents a comprehensive logic programming framework designed to support intelligent composition of Web services. The underlying model relies on the modeling of Web services as actions, each described by a logic programming theory. This view allows the use of logic-based planning to address the Web service composition problem, taking advantage of the fact that logic-based planning enables the elegant introduction of a number of extensions and generalizations (e.g., dealing with incomplete knowledge and preferences). The theory describing each Web service is encoded as a logic programming module, and different semantics are allowed within different modules, thus better reflecting the practical use of different service description formalisms and ontologies.

A Logic Programming Based Framework for Intelligent Web Service Composition

2011 ◽  
pp. 355-378
Author(s):  
Enrico Pontelli ◽  
Tran Cao Son ◽  
Chitta Baral
Keyword(s):  
Web Services ◽  
Logic Programming ◽  
Web Service ◽  
Service Composition ◽  
Web Service Composition ◽  
Service Description ◽  
Incomplete Knowledge ◽  
Programming Framework ◽  
Composition Problem ◽  
The Web

This chapter presents a comprehensive logic programming framework designed to support intelligent composition of Web services. The underlying model relies on the modeling of Web services as actions, each described by a logic programming theory. This view allows the use of logic-based planning to address the Web service composition problem, taking advantage of the fact that logic-based planning enables the elegant introduction of a number of extensions and generalizations (e.g., dealing with incomplete knowledge and preferences). The theory describing each Web service is encoded as a logic programming module, and different semantics are allowed within different modules, thus better reflecting the practical use of different service description formalisms and ontologies.

scholarly journals An implementation of Replication Oriented Architecture (ROA) for Web Service Scalability

2021 ◽  
Vol 4 (1) ◽  
pp. 168-180
Author(s):  
PO Obilikwu ◽  
VS Terwase
Keyword(s):  
Web Services ◽  
Web Service ◽  
Confidence Level ◽  
Application Development ◽  
Development Platform ◽  
Enterprise Application ◽  
Service Scalability ◽  
Scripting Language ◽  
The Web

Web services provide application to application integration across different platforms. However, the consumption of web services generates request traffic that must be attended to by an instance of the web server without fail. To guarantee dependability of the web service, the instances of the web service are replicated as a way of scaling the web service. The Replication Oriented Architecture (ROA) has been designed and implemented using the Java Enterprise application development platform and interesting results have been obtained. Improvements in the PHP scripting language have made it a popular programming language for web and enterprise application development. In this paper, an implementation of the ROA architecture using PHP is done. The implementation is simulated on the Apache Jmeter and results compared to the results obtained in the Java implementation. The results show that both application development platforms achieve web service scalability as a quality of service (QOS) expected of a web service. In specific terms, 50.9% at 95.0% confidence level improvement in response time was achieved when PHP is used which compares favorably with 22.5% improvement at 95.0% confidence level achieved on the Java platform.

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