Storing data in Blackberry

There are several ways you can store, share, and manage data for your apps:

Data storage approach	Description and API
SQLite database	Store data in relational databases with the Database API.
File system	Store data in files and folders with the FileConnection API.
Persistent store	Save objects across smartphone restarts with the PersistentStore API.
Runtime store	Save objects nonpersistently, which is useful for sharing data between applications and creating system-wide singletons, with the RuntimeStore API.
Record store	Store data in the MIDP Record Management System with the RMS API.