17. The method of claim 9 , further comprising a step of searching the range query index with a data value.
17. The method of claim 9 , further comprising a step of searching the range query index with a data value. 18. The method of claim 17 , wherein the step of searching the range query index with the data value further comprises steps of: finding a smallest-sized virtual square containing the data value; finding other virtual squares containing the smallest-sized virtual square; and obtaining query identifiers associated with virtual squares covering the data value.