As software increases in complexity and relies more on Internet and Web technology, the challenge of enabling interaction and communication between loosely coupled applications becomes increasingly vital. Distributed computing presents challenges to loosely coupled applications that require means with which to interact and communicate. There exist technologies that are aimed at solving these problems; Web service is one such technology. Web service is a relatively new and rapidly maturing technology in the area of distributed computing; it offers a standards-based way to exchange information in an interoperable manner. This thesis is done in partnership with StruSoft and attempts to provide a solution to their problem of distributed computing, by using Web service technology. The paper looks at distributed systems and various solutions to the problems associated with distributed computing. A comprehensive insight into Web service technology is provided, along with rationale as to why it is chosen for the project. In addition, there are guidelines as to how the necessary components of Web service are installed. Development of License Management Software is also a part of this thesis. The software offers a means with which to store and maintain data about customers and their licenses. Security is a major focus of this paper and thus extensively mentioned throughout. A detailedexplanation of computer security is presented, along with the necessary configurations that are needed to make the Web service and the License Management Software more secure.

The main subject of this master thesis is the Service-Oriented Architecture (SOA). It shows a complete overview of Web Services in terms of realisation of a SOA. The thesis mentions what is already done and what else remains to ful ll the basic SOA principles. Then, it reviews Java EE platform tools used to deal with the Web Services. Next, it introduces the Java Management Extensions (JMX) technology as a solution of the web service's area - SOA governance. Moreover, it examinates the possible usage of JMX for the web service's management and monitoring issues. Finally, it implements an exemplary web services management and monitoring application on GlassFish server for testing purposes.

It is not easy to apply XML in e-commerce development for achieving interoperability in heterogeneous environments. One of the reasons is a multitude of XML-based Frameworks for Internet Commerce (XFIC), or industrial standards. This thesis surveys 15 frameworks, i.e., ebXML, eCo Framework, UDDI, SOAP, BizTalk, cXML, ICE, Open Applications Group, RosettaNet, Wf-XML, OFX, VoiceXML, RDF, WSDL and xCBL. This thesis provides three models to systematically understand how the 15 frameworks meet the requirements of e-commerce. A hierarchical model is presented to show the purpose and focus of various XFIC initiatives. A relationship model is given to show the cooperative and competitive relationships between XFIC. A chronological model is provided to look at the development of XFIC. In addition, the thesis offers guidelines for how to apply XFIC in an e-commerce development. We have also implemented a B2B e-procurement system. That not only demonstrates the feasibility of opensource or freeware, but also validates the complementary roles of XML and Java: XML is for describing contents and Java is for automating XML documents (session handling). Auction-based dynamic pricing is also realized as a feature of interest. Moreover, the implementation shows the suitability of e-procurement for educational purposes in e-commerce development. / <p>Report code: LiU-Tek-Lic-2001:19.</p>

Industry white papers are increasingly being used to explain the philosophy and operation of a product in marketplace or technology context. This explanation is used by senior managers for strategic planning in an organization. This research explores the effectiveness of white papers and strategies for managers to learn about technologies using white papers. The research is conducted by collecting industry white papers in the area of Information System Integration and gleaned relevant information through text-mining tool, Vantage Point. The text mined information is analyzed to provide solutions for practical problems in systems integration market. The indirect findings of the research are New System Integration Business Models, Methods for Calculating ROI of System Integration Project, and Managing Implementation Failures.

In the following Master’s degree research main information and communication aspects in wind power plant farm analyzed and demonstrated by constructing basic prototype. The wind energy market in Europe is growing and needs have arisen to develop standard-based information systems to support future expansion of wind energy in Lithuania. Introduction and first chapter overview the background for modeling such system. Requirements for data structures representing main measurements and information exchange inside and outside of the system are defined on the base of IEC 61400-25 standard “Wind Turbine Generator Systems - Part 25: Communications for monitoring and control of wind power plants”. Models, comprising such system are described and possible communication topologies enumerated. From several existing communication profiles, defined in above mentioned standard, SOAP / XML based web services for communication architecture are chosen and prototype built. Article based on this work was written together with coauthor professor A. Nemura and presented in international KTU conference “Automation and Control technologies – 2005���� and LEI conference “Application of information and management technologies in electricity energetics“. The purpose of article is to form and refine the wind farm information system problem introducing IEC 61400-25 standard.

Basés sur les protocoles XML, SOAP et WSDL, les Services Web (SW) sont la technologie de base pour le développement d'Architectures Orientées Services (AOS). Ces architectures permettent de mettre en place des applications faiblement couplées avec un fort degré de configuration dynamique. Elles se basent sur la notion de relation de "services" formalisée par un contrat qui unit le client et le prestataire de services. Ce contrat est le point charnière de ce type d'applications. D'un point de vue purement marketing, les Services Web peuvent être développés pour satisfaire les besoins des clients, être facile à maintenir et aussi fournir un haut niveau de qualité de service. Les prestataires de Services Web doivent s'assurer de la fiabilité et de la disponibilité de leur infrastructure individuelle de Services Web. Cependant, les prestataires ne peuvent pas tenir compte de tous les besoins possibles des clients et des contraintes liées au développement de l'application donnée. Cela signifie que des mécanismes additionnels doivent être développés et ciblés pour un contexte d'utilisation donné. C'est exactement le type de problèmes que j'ai examiné dans mes travaux. Les développeurs d'application regardent les Services Web comme des COTS (Component Off-The Shell) et ignorent donc leurs implémentations et leurs comportements en présence de fautes. De ce point de vue, les clients ont besoin de développer des mécanismes de tolérances aux fautes spécifiques bien adaptés à leurs applications. Dans ce but, mes travaux de thèse m'ont conduit à proposer une plate-forme pour aider les clients à réaliser des connecteurs spécifiques de tolérance aux fautes (SFTC - Specifique Fault Tolerance Connectors) qui implémentent des filtres et autres techniques de détection d'erreurs (c.à.d des assertions exécutables) ainsi que des mécanismes de recouvrement qui sont déclenchés quand les Services Web ne satisfont plus les caractéristiques de sûreté demandées. De plus, le même Services Web peut être employé dans plusieurs applications orientées services avec différentes contraintes et peut donc tirer profit de plusieurs connecteurs (SFTCs). Le problème est similaire à l'utilisation des composants COTS dans les systèmes critiques de sûreté, et des travaux précédents ont déjà prouvé que des mécanismes tels que les wrappers étaient une solution possible. La différence dans le contexte des Architectures Orientées Services est que des wrappers prédéfinis ne peuvent pas être spécifiés pour satisfaire tous les besoins possibles. L'approche doit être plus adaptative pour permettre à des mécanismes de sûreté : 1) d'être définis au cas par cas pour une utilisation donnée du Service Web et 2) d'avoir une forte dynamique afin d'être modifiés selon les besoins. Ainsi, mes travaux de recherches ont permis de fournir aux développeurs d'Architectures Orientées Services: 1) un langage nommé DeWeL pour décrire les caractéristiques de sûreté de fonctionnement du connecteur et 2) l'infrastructure IWSD pour dynamiquement contrôler et exécuter les connecteurs dans des applications critiques. L'objectif final est de fournir aux développeurs d' Architectures Orientées Services une infrastructure et des outils capables de les aider à déployer des applications orientées services tolérants les fautes.

This thesis focuses on design of document exchange solution used between Stavební spořitelna České spořitelny a.s. (SSČS) and its external sales network, which is outdated and doesn't meet the needs of SSČS or sales network. The thesis also includes the identification of suitable basic principles used in the service-oriented architecture (SOA) concept and their application in design solutions. The aim of the thesis is a conceptual solution design, based on the principles of SOA and the following technological design of changes in existing environment, so that on this basis could be created a functional and technical specification for suppliers of these applications. Stated objective is achieved through an initial analysis of the current environment, which identifies the possibilities of existing applications, and identifies weaknesses in the process that will be changed in the new solution. The analysis covers as the environment of external sales network as the related environment in SSČS, which together figure in the process of documentation exchange. As the results of the analysis and based on theoretical knowledge and consultation with experts in the field of SOA is then formulated a proposed solution at the conceptual level, which is further elaborated in the description of the proposed changes in individual components of the new solution. The outputs of this thesis will serve SSČS both in terms of describing the existing and the new environment, and as an input for the specifications of the proposed amendments to the supplier concerned applications. Structure of the thesis consists of introduction, devoted to the characterization of SSČS and providing an initial framework for solved domain. This is followed by a description and the analysis of external sales network, particularly in terms of application equipment and communication flows, followed by a description of the environment in SSČS, which contains the components processing sent documents. Next part of thesis is devoted to the formulation of the basic concepts of SOA and selection of appropriate principles that are followed in the subsequent section to draft the solution itself, first at the conceptual level, followed by a detailed description of the necessary changes. Everything is then evaluated in the final part.

Present web is aiming to the possibility of automatization of user behavior on web applications. Adding of semantics and creation of web service interface are the main approaches for accomplishment of this user comfort. Nevertheless, this direction brings some problems which can make more difficult publishing and implementation of web documents. Web services can connect heterogeneous systems, because they are based on XML markup language that is a place where all applications can meet without lost of platform independence. The automatic transformation of a web application into a web service could be considerably more effective than to create a web service from the beginning. However, this step is for some applications almost unreal without knowledge of their inner structure. In most cases, the transformation will be done semiautomatically with help of human decisions.

Traditional architectures of software systems are in heterogenous environment of today's computer networks too heavy-footed. One of principles, which tries to solve this problem is service-oriented architecture (SOA). Practical way of its implementation is represented by web services (WS) built upon protocols like SOAP or XML-RPC. This diploma thesis focuses problem of providing contextual information to mobile devices and its solution based on SOA principles. The thesis introduces design and implementation of web service providing contextual information to mobile devices and prototype of modular inverse SOAP proxy server allowing its effective monitoring and management.

This master's thesis deals with analysis, design and implementation of an information system that allows easy extensibility with three-tier architecture.   System is developed using object oriented approach by programming language PHP, relational database server MySQL and web services and protocol SOAP. The View tier is implemented by web technologies XHTML and CSS. Analysis and design of this system is done with using the modeling language UML.     In this thesis is described the problem of multi-tier software architecture, theory of development information's systems and described design and implementation of an information system with a three-tier architecture and it's application in the society SDC.