Steve Litchfield has a good writeup on making your data mobile, creating PC databases that sync perfectly to files on your smartphone. All you need is HanDBase software for Series 60.

Instantaneous searching, multiple views, powerful sort and filtering options, categorized databases, data encryption (both manual and automatic) and up to 100 fields and 65,000 records per database are some of the amazing features of this software for your series 60 smartphones.

Read the full review and tutorial at AllAboutSymbian