OVERVIEW The Universal Description, Discovery, and Integration () protocol is a central element of the group of related standards that comprise the Web services stack. The  specification defines a standard method for publishing and discovering the network-based software components of a service-oriented architecture (). Its development is led by the  consortium of enterprise soft...

Serviceorientierte Architekturen (SOA) erfordern eine Konsolidierung der Systemlandschaft. Eine Vielzahl von Prozessen muss analysiert, automatisierbare Geschäftsfunktionen identifiziert und als Service implementiert werden. Das SOA Paradigma ist dabei nicht auf Anwendungssystemfunktionalität beschränkt, sondern betrifft auch halbautomatische und manuelle Dienstleistungen der Organisation. Um o...

Versioning is an important aspect of web service development, which has not been adequately addressed so far. In this article, we propose extensions to WSDL and UDDI to support versioning of web service interfaces at development-time and run-time. We address service-level and operation-level versioning, service endpoint mapping, and version sequencing. We also propose annotation extensions for ...

Current research in Web Service discovery is towards building Context Aware Pervasive Systems that give appropriate results based on users interests, but it is not completely discussed how far the retrieved services are actually relevant to the user. Also, the current context aware systems confine themselves to giving best results for user’s queries based on their profiles, which assume user to...

You hear all about Web Services but do you know how to create one? In this simple "How To" paper, we will try to demonstrate how to write and deploy a simple Web Service using Microsoft’s .NET environment with Visual Basic attend this session, and go back home very dangerous! 1. What is a Web Service? Simply stated, a Web Service offers a method (or methods) that can be invoked using open stand...

SQUID-WS is a system utilizing semantic annotation of web services to increase the accuracy of web service discovery. Service providers and requestors specify characteristics of web service operations using a common ontology (OWL ontologies are used), and a matching engine is used to match specifications. An inference engine is used to determine whether service advertisements meet additional co...

Service discovery is one key aspect in the enabling technologies for service-oriented systems including Web Services. Growing attention has been paid to the content of business and service descriptions to allow services to be discovered more flexibly and accurately. This paper presents an information model called an integrated service profile that covers aspects of Web Services, i.e. attribute-...

This is a REVISED DRAFT of the  Technical White Paper, and it incorporates the feedback of the technical committee to the initial draft. Please note that this document is a work-in-progress and should not be distributed outside the  member committees, except to solicit comments before publication. ■ Incorporated committee feedback to make several descriptions of  functions more prec...

This paper concentrates on the issue of matchmaking in the context of web services. It provides a brief review of the difference between directory services and matchmaking facilities and explains why directories such as UDDI are important but insufficient for web services and need to be complemented with advanced matchmaking facilities. It discusses the requirements that web services place on m...

1 Main Theme of Thesis Web Services (WSs) are modular, self-describing, loosely-coupled, platform and programming language-agnostic software applications that can be advertised , located and used across the Internet. They are viewed as one of the promising technologies that could help business entities to automate their operations on the web on a large scale by automatic discovery and consumpti...