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SQL Anywhere 10.0.1 » UltraLite - C and C++ Programming » Developing UltraLite Applications for Windows CE

Building the CustDB sample application Next Page

Storing persistent data


The UltraLite database is stored in the Windows CE file system. The default file is \UltraLiteDB\ul_<project>.udb, with project being truncated to eight characters. You can override this choice using the file_name connection parameter which specifies the full path name of the file-based persistent store.

The UltraLite runtime carries out no substitutions on the file_name parameter. If a directory has to be created for the file name to be valid, the application must ensure that any directories are created before calling db_init.

As an example, you could make use of a flash memory storage card by scanning for storage cards and prefixing a name by the appropriate directory name for the storage card. For example,

file_name = "\\Storage Card\\My Documents\\flash.udb"