Uppsatsen redogör för resultatet av en förändringsanalys av informationssystemet Opera – Operativ Tåginformation samt dess samverkan med andra informationssystem. Vi ger även ett flertal förändringsförslag angående Opera. Det primära målet är att utifrån analysen ge färändringsförslag angående Opera och dess informationssystemarkitektur. För att detta skulle vara möjligt har vi kartlagt Opera och den interaktion som sker med andra informationssystem. Målet är att öka förståelsen för Opera och dess informationssystemarkitektur samt att föreslå förändringar av densamma. Analysresultatet beskriver både Operas interna och externa informationssystemarkitektur det vill säga hur Opera samverkar med andra informationssystem, Operas kärnprocesser och hur dessa kan spåras i den nuvarande databasen. Förändringsförslagen innefattar ett erbjudande om att, utifrån en beskrivning av de viktigaste handlingarna i Operas kärnprocesser skapa en objektmodell som tydliggör de centrala begrepp i verksamheten. Detta bör leda till ett förbättrat informationssystem och en förbättrad informationssystemarkitektur som stöd för kärnprocesserna. Syftet med detta arbete är att visa på hur grundläggande begrepp i informationssystemarkitekturen kan definieras med utgångspunkt från en analys av verksamhetens kärnprocesser och handlingar.

Thesis (doctoral)--Universität, Bochum, 1999. / Includes bibliographical references (p. 269-299).

Universiẗat, Diss., 1999--Kassel. / Lizenzpflichtig.

Techn. Hochsch., Diss., 2004--Aachen.

Techn. Universiẗat, Diss., 2006--Darmstadt.

<p>Today there are many different Cad-applications on the market for engineers. Because of big building projects it has become more and more important to work with the same application or to have access to a neutral file type to be able to transfer files between different ones.</p><p>This report studies the single objects and how they react when transferring them between ADT and ArchiCAD via the neutral type IFC. We have also been looking at problems during the transfer between and if there are some connections between these problems. Afterwards we created a neutral object model of a small country house to see if the objects appeared different. The result shows no differences.</p><p>But looking at the problems that appeared during the transmissions they felt small and no logical.</p><p>Today it is not possible to save in a neutral type without facing small problems. But with small corrections it would become possible to use IFC without any difficulties. If we get IFC to work properly it would save a lot of time, effort and the possibility to store your projects for the future.</p>

Today there are many different Cad-applications on the market for engineers. Because of big building projects it has become more and more important to work with the same application or to have access to a neutral file type to be able to transfer files between different ones. This report studies the single objects and how they react when transferring them between ADT and ArchiCAD via the neutral type IFC. We have also been looking at problems during the transfer between and if there are some connections between these problems. Afterwards we created a neutral object model of a small country house to see if the objects appeared different. The result shows no differences. But looking at the problems that appeared during the transmissions they felt small and no logical. Today it is not possible to save in a neutral type without facing small problems. But with small corrections it would become possible to use IFC without any difficulties. If we get IFC to work properly it would save a lot of time, effort and the possibility to store your projects for the future.

Essen, Universiẗat Diss., 2003--Duisburg.

Techn. Universiẗat, Diss., 2006--Ilmenau.

Kassel, Universiẗat, Diss., 2007.