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426 Uppsatser om Database - Sida 1 av 29

IDQ Viewer: För enklare Visning av Databasstruktur : Viewer : För enklare Visning av Databasstruktur

The social community is structured around data, a lot of that data is stored in different types of Databases. The meaning of this essay is to develop an interactive tool that will change the way Database visualization is done, and also to research in which fields a tool of this type can be used. With the help of different methods we discovered areas where it could be of use, such as; presentation of a Database, development and documentation of a Database. The primary goal of the prototype was to make viewing of Database structures easier, even people without prior Database knowledge should be able to understand the structure. During the development we used prototypes.

Praktiska effekter av begreppsförvirring för en databas konceptuella design : En fallstudie om databas- och begreppsmodellering

Company X develops a laboratory information system (LIS) called System Y. The informationsystem has a two-tier Database architecture consisting of a production Database and a historicalDatabase. A Database constitutes the backbone of a IS, which makes the design of the Databasevery important. A poorly designed Database can cause major problems within an organization.The two Databases in System Y are poorly modeled, particularly the historical Database. Thecause of the poor modeling was unclear concepts.

Migration of a very large database with Swedish demographic data, using Microsoft SQL Server

SMC is in the process of developing a micro simulation model. The existing micro simulation model developed at Cornell University for US data, CorSim, is one of the fundamental parts for the new micro simulation at SMC. To develop the Swedish model, Swedish data on all individuals in Sweden during 11 years are also available. These data are organized in a Database. This paper describes the process of rebuilding the Database to a more useful structure.

Utveckling av internt Administrationssystem

This thesis work is executed at Business Unit Ericsson Test Environment (BETE), in Linköping. BETE is the department at Ericsson, which is responsible for the operation and maintenance of the company's Operations Support System (OSS). Their management system was outdated and they wanted it to be updated and it also required new features. The Database needed to be replaced and the data migrated to a new Database without licensing costs. The system also needed a part where employees could manage existing users.As a programming language PHP was chosen for its dynamic possibilities, platform independence and good support for Database intergration.

Platt Hierarki : Metoder för omvandling av relationsdata till hierarkisk data

The relational Database model was defined in the 1970?s and is the dominating Database type today.  The main difference between data from a relational Database and a hierarchical data structure is that the relational Database stores records in tables. The records have no particular order, but can include links in terms of relationships with other records. A hierarchical structure organizes data in the form of a tree structure  and  can for an example be found in organizational structures in which different levels involves different responsibilities. If the data stored in a relational Database is to be presented in a hierarchically, a conversion of the data structure is required. The intention of this paper is to describe how such a conversion can be performed.  To investigate the conversion methods, case studies has been conducted on the basis of a specific organization?s hierarchical structure.

Effektiv och underhållssäker lagring av medicinsk data

Creating a Database to manage medical data is not the easiest. We create a Database to be used for a presentation tool that presents medical data about patients that is stored in the Database. We examine which of the three Databases, MySQL with relational design, MySQL with EAV design and MongoDB that are best suited for storing medical data. The analysis i performed in two steps. The first step handles the Database that is most effective to retriev data. The second step examines how easy it is to change the structure of the various Databases. The results show that depending on whether efficiency or maintenance is most important, different Databases are the best choise. MySQL with relational design proves to be most effective while MongoDB is the easiest to maintain..

Utveckling och design av WiGID

The Center for Genomics and Bioinformatics (CGB) is an academic department at Karolinska Institute. Generally stated, the CGB department is committed to the generation and management of genetic information by approaches aiming at elucidating the connection between genes, protein and function.WiGID is a genome information Database that is available through WAP (Wireless Application Protocol).Our version of WiGID is based on WML, PHP and PostgreSQL as a Database server.One of the changes on the old WiGID application was the creation of a relational Database with seven tables and one view, instead of the file that represented the Database on the old version. We also changed the script language from python to PHP.The search engine ability has been extended with three new search alternatives for a user to choose from. Each choice leads to other, sometimes multiple choices.A GUI has been created for the administrator, to be able to insert information into the Database.The structure of the search engine is primarily for narrowing down the search result on the phone display, thereby making the search efficient..

Spetsbärförmåga hos betongpålar slagna i friktionsjord

The purpose of this study was to build a Database for point-bearing piles in dense noncohesive soil, predominantly moraine. Further, the Database was analysed and areas with difficult geotechnical conditions was identified.The Database includes for point-bearing piles driven to refusal in moraine. Piles with mainly shaft friction have been excluded. Only concrete piles have been included. Geographically the Database covers almost all geotechnical conditions of Sweden.

Användning av realtidsdatabas i diagnostiksystem

The main purpose in this degree thesis is to investigate changes in performance when introducing a newly produced Real-Time Database in one of CC Systems products, the Diagnostic Runtime Engine, DRE. The thesis is a collaboration between CC Systems, creator of DRE, and Mimer AB, developer of the Real-Time Database.The result reveals that the time spent on Database access is considerably lesscompared to the originally used Database. The research has lead to several additional requirements on the real-time Database and these are presented as part of the result in this thesis. The additional features will help making the product more suitable for DRE and similar applications.Additional research is required to be able to recommend the use of this product or not. Primarily the performance in another operating system, Windows CE, but also the introduction of additional features should be investigated.

ITS - Interaktivt textsystem

This report describes the creation of an interactive text system for storing, retrieval and publishing of texts, ITS.My task was to create a GUI together with a Database capable of handling text, commenting of texts, references between texts, and the capability to associate images with texts.After enough texts have been inserted into the Database, there shall be an ability to generate a report out of them.The report describes the methods used when the GUI was implemented, how the Database was modelled and implemented, and how the security aspects where solved.The entire project is created with the help of Java, MySQL server, Connector/J and OpenSSL.Furthermore the functions of the GUI and the future of ITS is described..

Implementation och design av relationsbaserad databas över patientinformation för cochleaimplantat

Databases are an easy way of storing information kept together and accessible and can save time by finding the information easier. Cochleaimplant could be seen as a form of advanced hearing aid, this product consists of two parts, an external part that recieves sound and sends signals to the internal part through electromagnetism. The internal part is the implant itself and is surgically placed in to the cochlea. Örebro University hospital has just started working within the field of Cochleaimplants and are therefore in need of a Database to store patient related information.The Database problem was solved using Microsoft Access 2003 combined with the built-in support for Visual Basic, which is a sort of programming language. The result of the thesis work was a fully functioning Database according to the given specification and is now being used at Örebro University hospital..

Kvalitetskontroll av servicedatabasen Sisyla

Sisyla is a joint project between the counties of Skåne, Blekinge, Jönköping, Kronobergand Kalmar in Sweden. A geographic Database has been built with the aim to study theservice situation of the area. The main purpose of this thesis is to find a method toinvestigate the quality of the Sisyla Database and to apply it. The method is adjusted tothe standard ISO 19114. The agreement between the Database and reality was studied ina test sample.

Arbete med utveckling av ett kartsökverktyg för nationell naturolycksdatabas

We have made a suggestion for a map based search tool used with a Database containinginformation on natural disasters. The Database is being developed by NCO (SwedishCentre for Lessons Learned from Incidents & Accidents).We examined both Swedish and international examples of Databases on naturaldisasters. The examples that we found were often hard to get the hang of, due to poorcompilation. The problem, that is typical of the international examples, is that the processof data collection is not standardized, as it is performed by different organizations andcompanies with diverse demands on and needs for the Database. Therefore, to keep itsymmetrical, there ought to be only one department with the overall responsibility for anational Database on natural disasters in Sweden.The natural disaster we based our study on was the flooding in Arvika in the year 2000.We inspected the availability of data about the flooding, and found it to be satisfying.Through contact with the municipality of Arvika, by mail and telephone, and a visit at theArvika municipality office, we acquired reports on the flooding and the joint rescueoperation that followed, and also GIS layers showing the extension of the flooding..

Design av Riskdatabas : En studie för effektivare hantering av risker

Risk management is a key competency that is constantly being researched how it can be improved within project management. The risk management process consists of four major steps: identify risks, assess the risks? significance on the project, evaluate and address the key risks and follow up.The majority of companies seem to neglect certain identified risks, and decide not to mitigate if the risk does not cause adverse effects to the business. To counteract undesirable consequences and help organisations to become more effective at managing risks an initial work has been conducted for a risk repository.The project develops a proposal on the design of a risk repository which aim to effectively support a Database implementation. The study includes literature studies which resulted in a relational model for Database implementation.

Mobil förvaringslösning för barn och vuxna

Databases are an easy way of storing information kept together and accessible and can save time by finding the information easier. Cochleaimplant could be seen as a form of advanced hearing aid, this product consists of two parts, an external part that recieves sound and sends signals to the internal part through electromagnetism. The internal part is the implant itself and is surgically placed in to the cochlea. Örebro University hospital has just started working within the field of Cochleaimplants and are therefore in need of a Database to store patient related information.The Database problem was solved using Microsoft Access 2003 combined with the built-in support for Visual Basic, which is a sort of programming language. The result of the thesis work was a fully functioning Database according to the given specification and is now being used at Örebro University hospital..

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