All user activity is controlled by the database manager program. Run as a service on Windows NT or as an executable program on the rest of supported platforms, the database manager is the first Ovrimos module to start and the last to stop (if at all).

Once the database manager is running, it listens to an HTTP Port (9000 is the default port value), thus allowing users to connect through any browser.

A user authentication is required before connecting to the database manager.
Two more executable programs are required for using a database, the dbmcore (a low level data management engine) and the sqlcore (a proxy for SQL and HTTP clients).

For every database to be started, one copy of the dbmcore and one copy of the sqlcore is run. These again, are executable programs, except for Windows NT, were they are installed as services.

Users may connect to any running database as long as they are authenticated database users.
Note: The database manager authentication does not automatically guarantee access to all database data. Every database has an administrator. Database users and user privileges are the database administrator's responsibility.

Users may connect to a running database by any of the following four ways:

• Through the database manager. All they need is clicking on the Connect button.
• Through a web browser, using host name and HTTP Port (The HTTP Port is known to the database manager at creation time, and may be edited by the database manager at any time).
• Through the sqlapp4 application program, using host name and SQL port. (The SQL port is known to the database manager).
• Through any API.

By closing the browser, the user of the database manager program disconnects from the database manager, but leaves the service (or executable) running, ready to accept a new connection request on the database manager HTTP Port. See also The Database Manager.

 
 
 

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