Chris, My understanding is that all 50 properties will be updated in Entities table. In addition the index tables will be updated. This is behavior reguardless of whether you are using Low-level data API, JDO or JPA. Probably the same behvior for Python as well since this at the AppEngine datastore level. I believe Max Ross discusses this in question from audience in Google IO - 2008 - Softer side of Schemas presentation....
Thanks Enrique Perez Austin, Texas On Jan 18, 8:40 pm, DutrowLLC <[email protected]> wrote: > Hi, > > When using the Java low-level Api, if I grab an entity out of the > database, then modify say 2 properties out of an available 50, then > save the changes, are all 48 other non-modified properties overwritten > with what is hopefully identical, non-corrupted data, or are only the > 2 properties that I modified actually written back in reducing the > risk of corruption and possibly providing an efficiency boost? > > Thanks! > > Chris
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