(anglicky) Database vendors are traditional significant subjects of informaton industry. Today they operate on the information market for almost 50 years, during that time their services have changed. This master thesis aims to examine and basically analyze the actual offer of their services, compare chosen features of them and to carry out evaluation of the services. The text presents database vendors and so called aggreggators and their traditional services. Also the price policy of the database vendors is mentioned. Case study of the offer of services of four database vendors is performed. The results demostrated, that traditional services of database vendors are still significant part of their product offer. But the form has changed. And some subject also offer services not typical for traditional database vendors.