The doubt about statistic cubes

Hi gurus,
first I have to say I searshed forum first but I didn't find my answer,so I have to post a new thread here:
2 doubt about statistic cubes:
1. after I install the TCT cubes and Roles and initial load then delta load successfully, shoud I often run the delta IP? say everyday though a PC?
2.what's the relation between statistic cube and the "DB statistic" tab on the Manage of a infocube? what's the useage of "create statistic","check statistic",and "refesh statistic" buttons?
thank you!

1. As there is some real time cube in the 7.0 content, you could start with a weekly load and see if it's enough....
2. The statistics on the manage InfoCube tab are db statistics. No link with the previous one. They are used to optimize execution plans at db level.
Regards,
Fred

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