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Create and Change 
The following sections explain how you create aggregates and HPA indexes and edit them.
· If you have not yet created aggregates for an InfoCube but you want to optimize query performance for it, see Creating the First Aggregate for an InfoCube.
· For detailed information about creating aggregates manually and changing them, see the information about editing aggregates manually.
· If you want the system to propose aggregates, see Automatic Selection and Optimization of Aggregates.
· If you want to create an HPA index for an InfoCube, see Creating HPA Indexes.