What's the use of Knowledge in Microsoft Sync Framework

I am able to implement my own sync framework for client-server synchronization by only using LastUpdateTime as the achor. I don't have to write anything like SyncKnow开发者_JAVA百科ledge.

seems like Knowledge is helpful in p2p scenario.

what exactly am i missing??

if you're talking about database providers in Sync Framework, there are two types of providers: offline provider and peer-to-peer/collaboration provider.

the former uses anchors to store what has been sent and what has been received and is normally used in hub-spoke type of syncs. in this scenario, only the client keeps track of what has been synched.

the other type of provider uses "knowledge" to store what has been synched and from which replica. thus it can sync peer-to-peer since its tracking as well where the change came from. in this scenario, all replicas store the knowledge.

Sync Framework 4 CTP (which has been postponed) is targeted towards Silverlight, WP7 and other non-MS platform but is actually running on top of Sync Framework 2.1.