• The reconfigurable index memory is not a simple storage device. It is enhanced with additional reconfigurable hardware resources for tailoring its use according to the index characteristics and to the data it manipulates.
• The reconfigurable index memory does not fit in the addressing space of the processor. It is indirectly accessed by specific queries submitted by the processor in order to execute crucial and costly indexing subroutines.
• The reconfigurable index memory does not hold any cache hierarchy, and therefore memory accesses do not have to worry about the data locality. Memory read operations have a unique cost, whatever the memory address, and whatever the previous memory accesses.
• Due to the FLASH technology, writing operation are limitted. It only aims to periodicaly store huge volume of data while allowing unlimitted read access.

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