In this thesis we present the database security mechanism and Web services implementation for the Ibidas system. The security mechanism restricts access to data by source per user. Web services provide an interface to call Ibidas methods and share data from and with other applications. We will see the need for the features presented, how they are implemented and the choices which were made during implementation. Furthermore we will show an example of the use of the Web services using the Taverna workbench application to solve a typical situation a researcher could face. We conclude this thesis with a discussion regarding our implementation and some future work indications.