5. The method of claim 4 , further comprising: constructing a separator directory in memory, wherein the separator directory includes separators for the multiple dictionary blocks, wherein at least one the separators is mapped to an index of the one of the multiple dictionary blocks that includes the first portion of the large string value for that separator.
5. The method of claim 4 , further comprising: constructing a separator directory in memory, wherein the separator directory includes separators for the multiple dictionary blocks, wherein at least one the separators is mapped to an index of the one of the multiple dictionary blocks that includes the first portion of the large string value for that separator. 6. The method of claim 5 , wherein the separator directory comprises one or more directory blocks that contain the separators for the multiple dictionary blocks and one or more directory blocks that contain logical pointers to the separators.