Data synchronisation enables mobile users to access up to date corporate data on their "disconnected" devices. They maintain a subset of the master database and update that local data at the same time others are working with the replica information, on either their own local databases or on the master database. When mobile users synchronise their local data with the master database, the synchronisation system coordinates all the updates so everyone receives accurate, up to date data. This is beneficial not only in making sales, but also because it helps corporate managers and sales teams share information created by field sales people, such as meeting notes, schedules and the opportunity data that feeds forecasts.