| http://www.w3.org/ns/prov#value | - A method of operating a data processing system, said system being of the type including a memory unit for storing a plurality of data blocks each including a sequence of n data records occupying respective positions within said data blocks, said records being consecutively designated R1 -Rn, where n is a positive integer, a cache memory for storing a portion of the data stored in said memory unit,
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