A method and system for synchronizing and using calendar information from a shared database is disclosed. Calendar information can be stored in a shared database, e.g., on a server system and accessed and synchronized with one or more portable computer systems. The calendar information is stored using particular category types which facilitate separate manipulation, access and remobal of the calendar information when placed onto a portable computer system (e.g., palmtop). In one embodiment, calendar information is stored on a shared database and is assigned a unique category type. Multiple portable computer systems can then access the shared calendar information which can be displayed on each computer system along with the system's own calendar information. The unique category type is different from the default type of each system's own calendar information and the user is not able to change category types on the portable computer system. Shared calendar information can be viewed and edited and then easily removed using the unique category type.