QAnywhere client applications can now use an UltraLite database as the client message store. This provides a lighter-weight solution for pure messaging applications on mobile devices. By pure messaging applications, we mean applications that use store and forward messaging, but not data synchronization.

Some of the key advantages of UltraLite are:

• It has a smaller application footprint and does not require full SQL Anywhere installation.
• It has a smaller process footprint. QAnywhere Agent requires only 3 processes instead of 4 (uleng11, dblsn, and qauagent instead of dbeng11, dbmlsync, dblsn, and qaagent).

UltraLite limitations

Keep in mind the following limitations of UltraLite when deciding between SQL Anywhere and UltraLite:

• There is no support for "ESCAPE" keyword in transmission rule condition syntax.
• There is limited support for property attributes. You can only use property attribute functionality with the predefined property ias_Network. See Custom client message store properties.

Recommendation

In general, UltraLite should be used rather than SQL Anywhere in all cases where SQL Anywhere is not already present. SQL Anywhere is available for circumstances where you want to add messaging along side an already implemented SQL Anywhere data synchronization solution. However, UltraLite is recommended in all pure messaging environments.