Difference between Switch -off and disable of an aggregate.

Hi All,
Can any one please tell me whats the difference between Switch-off and Disable an aggregate?
Appreciate ur help.
Thanks,
Soumya.

Hi,
You can temporarily switch off an aggregate to check if you need to use it. An aggregate that is switched off is not used when a query is executed.
To do this select the relevant aggregate and choose This graphic is explained in the accompanying text Switch On/Off. An aggregate that is switched off is marked in column Filled/Switched off with This graphic is explained in the accompanying text.
Since aggregates that are switched off must also be consistent, you do not have to activate the aggregate again or to fill it when you switch it back on.
Execute a query or trace that would use the aggregate that was switched off. Compare the time that the database needs with the time that the query needs when using the aggregate. If the query is not significantly slower without the aggregate, you can deactivate or delete the aggregate.
The system deletes all the data and database tables of an aggregate. The definition of the aggregate is not deleted.
Deactivation
Select the required aggregate and choose This graphic is explained in the accompanying text Deactivate.
The status display in the columns Status and Filled/switched off change back to This graphic is explained in the accompanying text.
If you want to, you can activate and fill the aggregate again later.
More information:
http://help.sap.com/saphelp_nw70ehp1/helpdata/en/26/4bc0417951d117e10000000a155106/frameset.htm
Hope it helps.
Regards,
Ray

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