Bureau Van Dijk provides a number of databases that provide different types of company information. The different databases integrate relatively well, and provide data in comparable formats.
Bureau van Dijk provides user guides within the respective websites. These guides are available only if you are logged on to the database.
Practical information on using this database is also available at the following blogs:
Although you will not yet find much information on Orbis on these blogs, the information for Amadeus, a similar database from Bureau Van Dijk, could also be helpful for Orbis.