Detta examensarbete är utfört för Imano AB och behandlar ämnet databaser. Enorma mängder data finns lagrad i databaser världen över, men bara en bråkdel av all data används till något. Data kan förekomma i många olika former och en mängd olika typer av databaser har vuxit fram som komplement till de traditionella relationsdatabaserna. För sociala nätverk, logistiksystem, e-handel och i många andra sammanhang är relationer mellan dataposter ofta lika intressant som själva datainnehållet. När så är fallet kan grafdatabaser vara ett intressant alternativ. I en grafdatabas sparas relationer mellan enskilda dataposter som egna objekt, och denna egenskap kan användas för att ställa frågor om hur data relaterar till andra data. För att på ett effektivt sätt kunna utnyttja grafdatabasens egenskaper finns behov för ett lättillgängligt och användbart verktyg. Syftet med examensarbetet är att skapa ett verktyg, som kombinerar grafdatabasen Neo4js förmåga att hantera relationer mellan enskilda dataposter med visuell presentation av data i en webbapplikation. Studien undersöker om detta verktyg gör att användaren lättare kan få ny förståelse ur befintlig data. Denna studie är i grunden ett utvecklingsarbete som följer principerna för metoden Design Science Research. Metoden består av en utvecklingsprocess i flera steg där empirin är den kunskap som erhålls under arbetets gång. I utvecklingsprocessen ingår även kvalitativa undersökningsmetoder för att samla in data vid demonstration och utvärdering av artefakten. I rapporten jämförs grafdatabaser med relationsdatabaser. Studien avser dock endast att peka på skillnader gällande vissa egenskaper och genomför ingen fullständig jämförelse av exempelvis prestanda. Studien visar enligt utvecklarna att grafdatabasen Neo4j har egenskaper som gör den lämplig för användning där relationer mellan enskilda dataposter är viktiga som källor till kunskap. Resultatet av forskningen är att ny förståelse kan komma ur befintlig data genom användning av grafdatabas, speciellt om den kombineras med visualisering. / This thesis written in swedsh is done for Imano AB and deals with the subject databases. Huge amounts of data are stored in databases worldwide, but only a fraction of all the data is used. Data can exist in many different forms and various types of databases have emerged as a complement to the traditional relational databases. In social networking, logistics systems, e-commerce and many other contexts, relationships between data items are often as interesting as the actual data content. When this is the case, graph databases provide solutions to problems that other databases cannot handle. In a graph database relationships between individual data records are stored as own objects. Thanks to this, it is easier to ask questions about how data relate to other data. To effectively exploit the graph database’s features there is a need for an accessible and useful tool. The purpose of the project is to create a tool that combines the graph database Neo4j’s ability to manage relationships between individual data items with visual presentation of data in a web application. The study examines whether this tool allows the user to more easily gain new insights from existing data. This study is basically a software development process which follows the principles of the method of Design Science Research. The method consists of a development process in several stages where empirical data is the knowledge obtained during work. The development process also includes qualitative research methods to collect data at the demonstration and evaluation of the artifact. The study shows, according to the developers that the graph database Neo4j has properties that make it suitable for use where relationships between individual data items are important as sources of knowledge. The result of the research is that new understanding can emerge from existing data using a graph database, especially when combined with visualization

Communication between people has become more and more important in society today and so has the way to communicate. Our work, which this master thesis is based upon, has been to evaluate and redesign an existing web application that works like a communication tool. To carry out this work we have compiled two questions; how to facilitate the interaction for an application that is used as a tool, focusing on interface design, usability and flow; how can the usability be improved in a system, with help of flow theory. To deal with these two questions we have used a number of methods that have had different kinds of influence of our work. The one that has had the greatest impact of the work with the evaluation has been cognitive walkthrough. For the design we have used literature studies along with the result of the evaluation. A problem during our work has been that the user has not been specified the design should work at a generic group of users. The problem has not been to define the target group rather to suit the interface to everybody. This has been the challenge of this semester and we found designing an interface infusing usability with help from flow as interesting. / Kommunikation mellan människor liksom sättet att kommunicera har blivit allt viktigare i samhället idag. Vårt arbete, som magisterarbetet bygger på, har varit att utvärdera och omdesigna en existerande webbapplikation som fungerar som ett kommunikationsverktyg. För att genomföra arbetet har vi utarbetat två frågor; hur förenklas interaktion för en applikation som används som ett verktyg, med fokus på gränssnittsdesign, användbarhet och flow; hur kan användbarheten öka i ett system, med hjälp av flow teorin. För att kunna ta itu med dessa frågor har vi använt ett antal metoder som har påverkat vårt arbete på olika sätt. Den för arbetet med utvärderingen mest betydelsefulla har varit kognitiv genomgång. För designen har vi använt oss av literaturstudier tillsammans med resultatet från utvärderingen. Ett problem under vårt arbete har varit att användarna inte har varit specificerade utan designen bör fungera på en allmän grupp användare. Problemet har inte varit att definiera målgruppen utan snarare att anpassa gränssnittet till alla. Detta har varit en av utmaningarna under denna termin och vi tycker en annan intressant utmaning har varit att designa ett gränssnitt genom att ingjuta användbarhet med hjälp från flow.

Denna rapport redogör för utredning samt utveckling av en webbapplikation som ska fungera som en stödapplikation för Combitech vid registrering av deras system i en databas. När en komponent behöver bytas ut eller uppgraderas så ska man kunna ta fram alla dokument som beskriver komponenten samt alla system som består utav denna komponent. På så vis kan de uppskatta hur stor inverkan ett utbyte eller en uppgradering av en komponent kommer att ha i ett tidigt skede i deras arbete. Webbapplikationen togs fram efter en omfattande utredning av verktyg som skulle användas under projektets gång, samt utredning kring vilka funktioner applikationen skulle innehålla. Därefter utvecklades webbapplikationen inom ramverket ASP.NET MVC. / This report describes the investigation and the development of a web application that will serve as a support application for Combitech when registering their systems in a database. When component needs to be replaced or upgraded, then you should be able to produce all documents that describe the component, and systems that consist of this component.Thus theycan estimate how much impact a replacement of an upgrade of a component will be in the early stages of their work.The web application was developedfollowing an extensive investigation of the tools that would be used during the project, and an investigation of the functions of the application. The web application was then developed in the ASP. NET MVC framework.

The main topic of this diploma thesis is the complete design of the web application for booking and selling package tours and other related services offered by the travel agency. The first part of this thesis describes the theory basis for the proposition, creation (production) and the implementation of the web applications with the emphasis on the methodology and technology used in this diploma thesis. The second part of the thesis consists of an analysis of current state in the travel agency and this analysis is the foundation of the last part of this thesis which contains the design of the design web application.

The thesis deals with models used in access control to operating systems' resources. The thesis' goals are the theoretical description of these models and their comparison, the description of their implementations in selected operating systems and the description of their utilization in securing typified servers. In the first chapter, the reader is introduced to basic terms and principles of computer security and access control. In the second, also theoretical part, selected access control models are described from different viewpoints, for example their factual specialization, basic rules, principles and evolution. At the end of the chapter, the models are compared to each other according to specified criteria. The third, more practically oriented chapter, continues from the initial, both general and concrete introduction with operating systems, to description of access control model implementations in selected operating systems. At the end of the chapter, these implementations too are compared according to specified criteria. The fourth, final part, is dedicated to the description of the actual securing of a web and file server using operating system level access control means. The end of the chapter is dedicated to the possibilities of using these means to secure web applications. The contribution of this thesis from the theoretical point of view is a well-arranged and compact access control model comparison, and also the merger of the theoretical base with practical use of the described model implementations. The thesis is recommended to people interested in the computer security issues in general and people interested in access control from both theoretical and practical sides, e.g. system administrators or system designers.

The aim of this master thesis is description of creating application designated to improve orienta-tion in radio spectrum usage in the Czech Republic and publication of data used by application as open data. First, the thesis describes open data, its importance and method of working with it. This part is followed by an analysis of issues, analysis of available data and selection of methodology for appli-cation development as well as for open data publication. Description of the process of application development and its launch follows. Whole thesis concludes description of the process for open data publication.

The subject of this thesis was agile development on ASP.NET web development platform. The main goal was to create new methodology MMSP - ASP.NET MVC by adjusting methodology MMSP for development in ASP.NET MVC framework, which was mainly achieved through the definition of new objects in the methodology. Text describes four newly created roles (eg. Database specialist) which are responsible for application development. Text also defines or modifies several tasks (eg. Database design) and work products (eg. Data model). All added objects were integrated into the methodology by adjusting its life cycle. At first, thesis was generally focused on the development of web applications, defined their characteristics and analyzed the possibilities of using agile development. Then the MMSP methodology was presented and verified its suitability for the planned extension. Furthermore, there was described the ASP.NET MVC framework, its architecture and basic characteristics. In the last chapter of this thesis methodology MMSP-ASP.NET MVC was verified on the example of development database management web application for the Anthropological Department of the National Museum in Prague.

The purposes of this study were to design and develop the web service for fixed asset tracking and stock taking. Both theoretical and practical concepts were examined in order to apply them during significant part of service's life cycle covered in this thesis, from the very first analyses to the first production release. Primary goal of this study was to design the service and get it ready for the basic usage. Secondary goal was to document the process of designing and developing the service. Involved methods, practices and technologies were described. These goals were achieved using analytical methods and executive skills. In addition to development of web service itself, most important contributions of this thesis include supplying an in-depth study of web service design and development structured as a step-by-step tutorial.

The main objective of this diploma thesis is to design an efficient methodology for testing and evaluating user experience of smaller web applications. The proposed methodology is based on understanding the issues of user experience testing of small projects, exploring the principles of current methodologies and analysis methods for testing and evaluating user experience. Based on the analysis, appropriate methods are selected and the methodology is assembled. Part of this thesis is verifying the methodology on a real project in practice in order to reveal its potential shortcomings. This thesis is composed of two parts. The first, theoretical part includes analysis of user experience issues and its testing, description of the methodology principles and the analysis of methods themselves. The second part includes the designed methodology and its verification in practice. Proposed methodology should be beneficial for small development teams or companies that have a need for testing the user experience, but do not have enough resources to develop their own methodology or purchase the methodology developed by another company. In practice, I was not able to find freely available methodology for testing the user experience, which would also be designed specifically for small projects.

The aim of this thesis is to implement a web interface for the LISp-Miner academic system which provides association rule mining capability. There is a new trend these days for knowledge discovery in databases applications which are being transformed from desktop applications to web applications and this arises both new opportunities and issues. This thesis describes new interactive approach for association rule mining in which the user is an essential part of the algorithm and can alter the task setting. Users can also collaborate by creating domain knowledge repository which helps finding new interesting information out of the data.