In this example HRD and DM780 are using the same logbook, the logbook is either on the same computer as HRD and DM780 or on another computer somewhere on your network. This is the most basic configuration, operation is totally transparent. The logbook is using three databases: Current - read/write, new entries are added in this database. RTTY 2007 - read only, from your record-breaking entry in this contest. CQ WW 2006 - read only, all QSO's from this contest. The contest databases are loaded to provide callsign looking information - date last worked, name and address etc. You could even load a database from someone else!

This is a typical multi-user scenario. Bill (GD4ELI) and Ben (HB9DRV) go on holiday to an exotic location taking their laptops for radio control and logging. Each laptop stores QSO's locally and uses the store-and-forward option to forward QSO's to a central server located in a secure facility somewhere. The server optionally returns information from QRZ.com and various callsign CD's as well as updating Bill and Ben's website. The central server updates two databases, C:\Data\Database.mdb which is located on a disk drive and has read-write access, and Z:\Data\Backup-2008.mdb which is located on a USB memory stick. Only new and modified entries are added to this database. In addition the Old QSO's 2000 to 2008 database is used for name and address lookup. When the network connection from the holiday island to the secure server is not available the secure server cannot be access; when the network is restored the secure server's databases are updated with the contacts made while the network was unavailable.  Even if the airline loses our two friends' laptops during the return flight all QSO's are safely stored on the central server on both hard disk and on a USB memory stick.