Cache groups and synchronization groups control the synchronization schedule for cache and client MBO data.
Cache groups specify data refresh behavior for every mobile business object (MBO) within a group. MBOs can belong to only one cache group. Cache groups are created during development, at which point MBOs are grouped together based on their data refresh requirements. Since all MBOs in a cache group are refreshed simultaneously according to the group's cache policy, cache groups ensure that MBOs with related content remain consistent.
Synchronization groups are collections of MBOs that are synchronized together on client devices. MBOs within the same synchronization group can come from one or more cache groups. When a client synchronization request for a synchronization group is received, MBOs belonging to on-demand cache groups are refreshed according to the cache policy for that group.