Porovnání open source relačních databázových systémů

This thesis deals with the subject of Open Source relational database systems. Its goal is to provide an overview about these systems, analyze their position on market and compare them according to predefined comparative criteria, which are focused on specific general features and administration of database systems. The first part of the thesis provides necessary theoretical knowledge about database systems describes currently most widely used types of these systems and explains the term Open Source software. Next one is aimed on how are these systems used in companies information systems and how are they positioned on database market. Third part presents four most widespread Open Source relational database systems, states their development in time from their creation till nowadays and what licenses are they provided under. Following is a part dedicated to specification of comparative criteria, which is followed by the comparison of database systems in these criteria, always using one of three evaluation methods. In the last part of thesis the final review of gained knowledge and the results of the comparison are presented in summarized graphs. The thesis could be used as a unified information source for computer specialists in different job positions - IT Managers, database administrators or systems integrators - while choosing suitable Open Source relation database system for engineered or redesigned information system of a company.