Logical Database design

Discuss how you would use Storage structures mainly the tablespaces, Database Security features, Oracle Net services to logically manage what users can do or not to the database. Assume you would want to achieve partial database availability to different users at some times so that whilst some users can be able to access the database you disable some group from using the database or just change what they can do on the database. Explain clearly why you would achieve your goals going by the approaches you have chosen.