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Former Member
Jul 07, 2016 at 07:10 AM

are there two levels, L1 and L2 of delta stores


dear all

i have been reading up on the delta merge process, and come across a document that may explain the reason why i though delta storage was row based, in the face of many recent documents that say the delta store is a column based.

it states that there are actually 2 levels of delta store.

L1 - row based, uncompressed

L2 - column based, dictionary compressed

can anyone categorically confirm this, and maybe point to further information.