<p>Cilj istraživanja realizovanih u ovom radu, bio je je da se formalno opišu mogući pristupi transformacijama različitih opisa baza podataka iz jednog modela podataka u drugi i praktično provere kroz njihovu implementaciju u okviru jednog CASE alata, namenjenog projektovanju informacionih sistema i baza podataka. U skladu sa postavljenim ciljem definisan je metodološki pristup i softversko okruženje IIS*Ree koje omogućava visok nivo automatizacije procesa reinženjeringa informacionih sistema. Okruženje IIS*Ree, zasnovano na MDSD principima, kao krajnji rezultat generiše šemu baze podataka u izabranom ciljnom, konceptualnom ili implementacionom modelu podataka, kao i prototip aplikacije.</p> / <p>The goal of the research presented in this paper is to formally specify approaches to transformation of database specifications between different data models. The transformations are then to be implemented and tested using a CASE tool for modelling information systems and databases. Following this goal, a methodological approach is defined together with a software named IIS*Ree that provides a high level of automation of the information system reengineering process. The IIS*Ree software, developed in accordance to MDSD principles, generates database schemas specified in a target, conceptual or implementation data model, as well as application prototypes.</p>

Data storing semantic technologies separate it from applications code and gives availability for computers as well as people understand and share semantics in real time. These technologies also enable to add new data source or link between software applications as easy as to draw new link in the model. Unfortunately these technologies are yet not developed and popular as we could notice strong benefits of them in daily life. Introduction of semantic search system is an attempt to show the strong points of semantic technologies. Semantic search is more precise because of its opportunities to narrow handled domain down, it gives more exact result than usual, keyword based search. This advantage is clearly shown when database is very large and is filled with plenty of data. It also gives possibility to retrieve results from multiple distant data sources and form custom or predefined result sets as a central hub for some data domain. Automatic ontology generation based on database schema and metadata is suggested in this work. Such solution ensures that semantic search, which uses generated ontology, serves up-to-date search services even when structure of database is changed.

There is information to my master's thesis which is called “Web application for NS2 training”. This application works after installation and its source codes are saved on applied CD. It is said about implement Network Simulator 2. It helps to realize simulation of nets and then author inserts information about them into web application. Registered web's visitor has possibility to insert project into application. The project contents information about simulation created in NS2. Web application can also visible detail of possible project which is approved of administrator. Then the visitor can sort projects, search entered expression or connect his contribution to discussion forum. Administrator can approve users projects in his part of application. It makes available for the others. He can also delete them from database. Theory about technologies which are used for implementation of this application. It is talked about web Apache server, database MySQL server and programmable PHP language. There is also mentioned information about security of web application included possible attacks on applications and their database. It is presented proposal of database which creates core of application. This proposal is depended on application requirements. Next chapters give to reader whole image about functionality of application. There are mentioned samples of final graphical image of application. This document also provides the shows of source codes for creating database tables.